ICD 10 codes for the Novel Coronavirus infection

A new coronavirus, the Novel Coronavirus infection is emerging as an important and major challenge globally, the World Health Organization (WHO) warns in its press statement released 12 May 2013.

WHO experts say the disease which has infected people since 2012 in several countries in the Middle East region countries like in the Kingdom of Saudi Arabia as as well as in other countries in the rest of the world, is caused by a virus related to the SARS virus, both of which belong to the coronaviruses family.

Health Information Management (HIM) / Medical Records (MR) practitioners must already know the existence of the new chapter, Chapter XXII Codes for special purposes – which is classed as an ‘other’ type chapter for the purpose of the axis of classification and which contains a limited number of categories, and the codes contained under Provisional Assignment Of New Diseases Of Uncertain Etiology that is codes U00 tp U89 in ICD-10 Version 2010.

I  can forsee the dilemma faced by HIM / MR  practitioners when assigning an ICD 10 code for a new disease like that caused by the novel coronavirus. Clear documentation in the patient’s medical record by the responsible consultant is important and holds the key in assigning the right codes.

I like to infer and I think it is the prevailing standard in assigning the Code U04.9 Severe acute respiratory syndrome [SARS] as well as assigning codes for all treated manifestations of the condition when a clear clinical diagnosis of SARS is found, and also assigning the Code B97.2 Coronavirus as the cause of diseases classified to other chapters after the Code U04.9, when the coronavirus has been identified as the cause of SARS,

References:

  1. International Statistical Classification of Diseases and Related Health Problems (ICD-10) 2010, 10th Revision, World Health Organization (WHO), Geneva
  2. WHO Press Statement Related to the Novel Coronavirus Situation, World Health Organization (WHO), viewed 13 May 2013, <http://www.who.int/mediacentre/news/statements/2013/Novel_Coronavirus_12052013/en/index.html>
     

     

“Seems nine codes for a turkey assault is a bit silly.”

A turkey is  a large bird, one species commonly known as the wild turkey is native to the North American continent, while the domestic turkey is a descendant of this species.

I have never encountered coding for being assaulted by a turkey using ICD 10 in Malaysia. This morning I was amused to find out from a blog that a US legislator, Rep. Ted Poe (R-Texas) was fully aware of the array of ICD 10 codes available for the following conditions, especially the codes available for being assaulted by a turkey:

  • Nine codes for being assaulted by a turkey, one code for being assaulted by a turkey for the first time, one code for being assaulted by the turkey a second time etc.
  • Five codes for being hit in the face by a basketball; and
  • Three codes for being injured by walking into a lamppost.

Poe highlighted these codes in his recent speech when he had criticised the forthcoming ICD 10 medical coding mandate in the US by October 2014. He believes that the level of such detail required for ICD 10 coding “a bit silly”, and would pose challenges for US health care providers.

A check using ICD 10 does not provide codes for the above external cause of injury(s), with such specificity.

But such specificity is provided for in ICD-10-CM.

For example, encounters with a turkey (not necessarily the same turkey) is classified to nine codes, one for “contact with turkey”, one code for “struck by turkey” which has three other codes under this code that describe this diagnosis in greater detail, and one code for “pecked by turkey” which has three other codes under this code that describe this diagnosis in greater detail.

But this is not the same as I think as Poe comprehended based upon his remarks, meaning nine codes assigned for nine encounters of one patient, each of these nine codes assigned for assault by turkey multiple times by one same turkey or different turkeys!

I think it would be absolutely absurd if a patient were to present at a hospital with nine encounters, one after another encounter as a result of assault by a turkey or turkeys, right?

If a patient was struck by a turkey in Malaysia, how would I code to ICD 10. Malaysia does not use ICD-10-CM.

One has to examine Volume 3 of ICD 10 first, to make “clever” (not implying anything here, perhaps “trained” is a better choice of word) decisions in order to assign a near accurate code using ICD 10, unlike my pal in the US using ICD-10-CM. I say “clever” because, you need to find what term(s) define the external cause of injury, which means narrowing down the choice of adjectives defining the lead term(s) for the external cause of injury to search for in Volume 3. I think a good command of the English language is absolutely necessary.

If the doctor had written “struck by turkey” then it would be easy to turn to Section II, Volume 3 and search for the lead term “struck”. Otherwise it is like finding a needle in a hay-stack, searching for the right lead term to look under.

While medical records documentation is not near the desirable quality to expect in most instances, experience in ICD coding will ease this burden when one had encountered such coding problems. However, Health Information Management (HIM) / Medical Records (MR) practitioners still need to examine the entire medical record to find clues to assign an appropriate ICD-10 code in such instances, or simply get back to the attending doctor for help and advice.

So an amateur coder would look under “contact”,  and/or “hit” (which asks to “see Struck by”), and/or “exposure”.  If you look under (i) “contact”, you will find “contact with animal NEC” and the code W64.-., (ii) “hit”, you will find that you are redirected to go to “see Struck by”, and if you look under (iii) “exposure”, there is no find.

So you just go to “struck” for (ii) above or from “hit” to “struck” and your find “animal (not ridden) NEC and the code W55.-

Since birds are also animals like mammals, reptiles, fish and insects, then the turkey is an animal.

So the code is either W55- OR W64.-.

Checking Volume 1, W55.- states the code as “Bitten or struck by other mammals” while W64.- states the code as “exposure to other and unspecified animate mechanical forces”.

A turkey is a bird and not a mammal, so W55.- is not appropriate already, and I am left with W64.- only.

A turkey which strikes a patient must have been agitated, be it either a wild or a domesticated one ( I can only visualise a domesticated turkey in Malaysia, like those bread for poultry at Jitra, Kedah, Malaysia or a patient raring turkeys at his or her home).

So if the turkey strikes at the patient, then it runs towards the patient with mechanical forces using its legs. Thus, its movement is animated, and mechanical, and I would choose to assign the ICD 10 code W64.-, in this case of a patient exposed to a turkey attack or assault which runs towards the patient with animated motion using the mechanical forces of its legs.

From this example it is clear that ICD 10 is not as specific as ICD-10-CM.  That is why ICD 11 is on the way which I think will be more granular that ICD 10.

References:

  1. Badriyah Turkey Farm, viewed 15 April 2013, < http://badriyahturkeyfarm.blogspot.com/ >
  2. ICD10Data.com, viewed  15 April 2013, < http://www.icd10data.com/Search.aspx?search=turkey&codebook=AllCodes >
  3. Kasperowicz, P, Floor Action Blog, The Hill, viewed 15 April 2013, < http://thehill.com/blogs/floor-action/house/292961-lawmaker-rejects-medical-code-mandate-mocks-nine-codes-for-being-assaulted-by-a-turkey >

ICD 11 – The Content Model, Part 2

ICD 11 book coverIn this second part of the ICD 11 Content Model posts, I will aim to provide an insight into the basic structure of the model.

As you can read from the post ICD 11 – The Content Model, Part 1 (this link will open in a new tab of your current window), the revision process of the The 11th revision of the International Classification of Diseases and Related Health Problems (ICD ) is a broad participatory Webbased development process by the World Health Organisation (WHO).

This collaborative development of new content and proposed changes for ICD 11 is the responsibility of a Revision Steering Group (RSG) within the WHO ICD Revision Organisation Structure, which serves as the planning and steering authority in the update and the run-up to the revision process of ICD 11.

Today the Beta Draft of ICD 11 is available as the culmination of an information infrastructure and workflow processes started initially by Topic Advisory Groups (TAGs) for various specialty areas. The Webbased development of ICD 11 which is still open for comments and suggestions by interested parties in a social process on the Web, is integrated with knowledge of (i) diseases and health conditions, the eotiology and the anatomical and physiological aspects of the disease, (ii) input of all chapters and codes from existing clinical modifications of the ICD, and (iii) mappings to other terminologies and ontologies from other WHO-FIC (Family of International Classifications) members into computer systems, thus creating draft classifications for field testing as it is available in the Beta Draft of ICD 11.

I can prefigure the complex problems of developing ICD 11, which surely was undertaken and managed by using systematic approaches to deal with its development in a prescribed way and by using analytical techniques to identify and dissect the orderly arrangement of the mass of data already in a confused state into logical patterns thus promoting understanding and pointing the way to an appropriate decision within a clearly defined framework and a concrete context, the ICD 11 Content Model.

Thus, the Health Informatics and Modeling Topic Advisory Group (HIM-TAG) – also a part of the WHO ICD Revision Organisation Structure,  was entrusted to develop the ICD-11 Its task was to ensure that the Content Model remains the critical component of ICD 11 that specifies the structure and details of the information that should be maintained for each ICD category in the revision process.

The WHO (2013) describes the Content Model as a structured framework that captures the knowledge that underpins the definition of an ICD entity in the following ways:

  • includes the full scope of health care diseases and related health conditions (such as traditional medicine entries) so as to be as congruent with the overall structure 
  • ICD 11 entities are represented in a standard way from the currently set of different 13 defined dimensions or  main “parameters”, each parameter expressed using standard terminologies known as “value sets” by observing basic taxonomic and ontological principles including:
    1. key definitions: disease, disorder, syndrome, sign, symptom, trauma, external cause,
    2. separation of disability and joint use with the International Classification of Functioning, Disability, and Health (ICF),
    3. attributes  – etiology, pathophysiology, intervention response, genetic base, and

    4. linkages to other classifications and ontologies, including that of for Primary Care, Clinical Care and Research
  • the Content Model enables content experts to view and curate i.e to pull together and sift through and select for presentation its contents using software tools that allows automatic error checking and enforces constraint enforcement thus maintaining the correctness or validity of the stored data (integrity ). 

Each category ICD 11 entity in the Content Model will be described by 13 different, defined dimensions or main “parameters” as can be seen below.

ICD-11-content-model

More in the next post on the ICD 11 Content Model.

References:

  1. World Health Organisation, 2012, Content Model, viewed 18 March 2013, < http://www.who.int/classifications/icd/revision/contentmodel/en/index.html >

ICD 11 – The Content Model, Part 1

ICD 11 book coverThe Content Model of an ICD entity in the 11th revision of the International Classification of Diseases and Related Health Problems (ICD) forms the basis of this succeeding post to the earlier post ICD 10 & ICD 11 Development – How, What, Why & When (this link will open in a new tab of your current window).

It is not my intention to write volumes on Content Model, rather I shall attempt to share the basics of this model in its simplest form that I have understood as compared to ICD 10.

We know that ICD 10  had evolved to include morbidity classification from its original design to record causes of death. We are aware that ICD is also used for reimbursement (in countries like in the US), and also used in specialty areas such as oncology and primary care.

Then we also know that from the ICD-10 tabular list found in Volume 1, ICD 10 is organised as a monohierarchy. Monohierarchy is a top-down classification. Perhaps the following example of a monohierarchy among Felidae, the biological family of the cats will make things clearer of what I wish to write  about how ICD 10 codes are organised.

Monohierarchy

ICD 10 uses letters for an initial broad categorisation (e.g., I for diseases of the circulatory system) and combined with digits (e.g. I00 to I02) for each successive level of child codes. Sibling codes (e.g. I01.0 and I01.1) are considered to be exhaustive and mutually exclusive, requiring the use of residual categories—“unspecified” and “other”—at each level, (e.g. I01.9 Acute rheumatic heart disease, unspecified).

A code may have associated inclusions (I10 Essential (primary) hypertension Incl: High blood pressure) and exclusions (e.g. I01.0, Excl: when not specified as rheumatic [I130.-]).

Inclusions are exemplary terms or phrases that are synonymous with the title of the code or terms representing more specific conditions (e.g. I21 Acute myocardial infarction Incl.:myocardial infarction specified as acute or with a stated duration of 4 weeks (28 days) or less from onset).

Most exclusions are either conditions that might be thought to be children of a given condition but, because they occur elsewhere in the classification, must be excluded from appearing under it (e.g. I25.2 for old myocardial infarction); others are codes representing possible co-occurring conditions that should be distinguished from the condition (e.g.I23 Certain current complications following acute myocardial infarction i.e to say co-occuring or concurrent with acute myocardial infarction (I21-I22).

As I have posted in the posts ICD 11 – history of the development of the ICD from 1853 to 2015 (this link will open in a new tab of your current window), ICD 11 is been developed as a participatory Web-based process.

The development of ICD-11 is aimed to create an information infrastructure and workflow processes that utilises knowledge from existing hierarchies of codes and titles found in ICD 10 Volume 1 as I have elaborated above, and supplementary volumes of rules (found in ICD 10 Volume 2) and indices (found in ICD 10 Volume 3).

This new ICD 11 information infrastructure captures the knowledge that underpins the definition of an ICD entity as we know of it today – again as I have elaborated above, which will thus aid the review of best scientific evidences to enable the definition of diseases and health conditions, encoding of the eotiology and the anatomical and physiological aspects of the disease, and mappings to other terminologies and ontologies.

Initially the workflow of the collaborative development of new content and proposed changes, review and approval processes, and the creation of draft classifications for field testing was undertaken by Topic Advisory Groups (TAGs) for various specialty areas.

The workflow continued with the Alpha Draft of ICD-11 revision process with comments and suggestions by interested parties collected in a social process on the Web and  ended by May 2010, and continued with the Beta Draft with field trials of draft standards.

The Alpha and Beta drafts have produced the new ICD 11 information infrastructure based on the Content Model for ICD 11 which represents ICD entities in a standard way, each ICD entity defined by “parameters” representing different dimensions – a parameter expressed using standard terminologies known as “value sets” that specifies the structure and details of the information that should be maintained for each ICD category in the revision process and which thus allows for computerisation.

In the next post, I shall post about the basic structure of the Content Model.

References:

  1. International Statistical Classification of Diseases and Related Health Problems, The Tabular List Volume 1 Version 2010, 2010 edn, World Health Organisation, Geneva, Switzerland
  2. World Health Organisation, 2012, Content Model, viewed 18 March 2013, < http://www.who.int/classifications/icd/revision/contentmodel/en/index.html >

APDC: ICD-10 codes for 12 known and common diseases of the duodenum, gall bladder, liver, and pancreas

ICD-10-book-cover-for-APDC-series-labelBeginning with this post, I shall commence a series called “APDC”, short for “Anatomy and Physiology Disease Coding”.

Posts will feature anatomy vectors incorporating display of diseases and conditions terms from the International Statistical Classification of Diseases and Related Health Problems 10th Revision (ICD-10).

My aim of these posts is to share ICD-10 coding experiences on common diseases and conditions with readers  who have just embarked on a new career in Health Information Management (HIM) / Medical Records (MR) management and as a refresher for ICD-10-experienced readers.

By common, I am only highlighting the diseases and conditions that I have frequently encountered  principal diagnoses found in medical records here in Malaysia, and perhaps in your region too.

Today let us look at diseases and conditions common to the duodenum, gall bladder, liver, and pancreas. The image below shows some of the common diseases and conditions found in medical records for the duodenum, gall bladder, liver, and pancreas (click on the image to view a larger image in a new tab of your current browser window).

ICD10-codes-for-12-known-common-diseases-of-DGBLP

ICD-10 Chapter XI is the chapter that contains the ICD-10 codes for diseases of the digestive system, including those affecting the duodenum, gall bladder, liver, and pancreas.

Alcoholic liver disease usually occurs after years of drinking too much. The longer the alcohol use has occurred, and the more alcohol that was consumed, the greater the likelihood of developing liver disease, causing swelling and inflammation (hepatitis) in the liver. Over time, this can lead to scarring and then cirrhosis of the liver. Cirrhosis is the final phase of alcoholic liver disease. Code K70.3 for alcoholic liver disease is advised..

Acute cholecystitis is a sudden inflammation of the gallbladder that causes severe abdominal pain. In 90% of cases, acute cholecystitis is caused by gallstones in the gallbladder. Other causes include severe illness and (rarely) tumors of the gallbladder. If it is recorded as acute cholecystitis, then use the ICD-10 code, K81.0, but many times it is just recorded as cholecystitis, thus just use K81.

The cystic duct is the short duct that joins the gallbladder to the common bile duct. Gallstones can enter and obstruct the cystic duct, preventing the flow of bile. Have you encountered jaudice sometimes recorded in the medical record? The occurrence of jaundice due to inflammation of the gallbladder neck and adjacent hepatoduodenal ligament resulting from a stone lodged in the cystic duct could be defined as the Mirizzi syndrome, a rare complication. Inexperienced coders would just code the jaundice to R17, unspecified jaundice.

Duodenitis is inflammation of the duodenum, the first portion of the small intestine. The duodenum is a tube around a foot long. Its near end connects to the stomach; the duodenum’s far end blends into the rest of the small intestine.

Duodenitis can only be diagnosed with a tissue biopsy, which is performed using endoscopy (esophagogastroduodenoscopy). Hence, Biopsy or endoscopy are common ways of recording diagnosis, which means the Health Information Management (HIM) / Medical Records (MR) practitioner must read the contents of the medical record to derive at a more decisive ICD-10 code.  Some of you must have known the diagnosis Crohn’s disease –  an inflammatory condition that can cause duodenitis,:recorded as the principal diagnosis in medical records. If you are certain that duodenitis is the reason for the endoscopy, then use ICD-10 code K29.8, otherwise just code Crohn’s disease.

The shape of the pancreas is like a tadpole, the pancreas can be affected in its head (the rightmost portion that lies adjacent to the duodenum), body (the middle portion of the pancreas), tail (the leftmost portion of the pancreas that lies adjacent to the spleen) parts, and the ducts that lead away from the pancreas.

Most people have just one pancreatic duct. The pancreatic duct (functional), or duct of Wirsung (also referred as the Major pancreatic duct), is a duct joining the pancreas to the common bile duct to supply pancreatic juices which aid in digestion. The pancreatic duct joins the common bile duct just prior to the ampulla of Vater, after which both ducts perforate the medial side of the second portion of the duodenum. However, some people have an additional accessory pancreatic duct also called the Duct of Santorini (non-functional), which connects straight to the duodenum, bypassing the Ampulla of Vater.

Compression, obstruction or inflammation of the pancreatic duct may lead to acute pancreatitis. The most common cause for this obstruction is choledocholithiasis, or gallstones in the common hepatic duct. ICD-10 Code K80.5 is the correct code for choledocholithiasis. Obstruction can also be due to duodenal inflammation in Crohn’s Disease. A gallstone may get lodged in the constricted distal end of the ampulla of Vater, where it blocks the flow of both bile and pancreatic juice into the duodenum. Bile backing up into the pancreatic duct may initiate pancreatitis. Calculus of pancreas is the condition when a gallstone may get lodged in the pancreatic duct. ICD-10 Code K86.8 is used for this condition.

Sometimes doctors will record the discharge diagnosis as ERCP, short for Endoscopic Retrograde Cholangiopancreatography, which is a technique that combines the use of endoscopy and fluoroscopy to diagnose and treat certain problems of the biliary or pancreatic ductal systems. Through the endoscope, the surgeon can see the inside of the stomach and duodenum, and inject dyes into the ducts in the biliary tree and pancreas so they can be seen on X-rays. ERCP is used primarily to diagnose and treat conditions of the bile ducts and main pancreatic duct, including gallstones. Since procedure coding is yet to be implemented in most hospitals in Malaysia,  I like to suggest that Health Information Management (HIM) / Medical Records (MR) practitioners must read the medical record to determine the right ICD-10 to use. Is the patient suffering from acute pancreatitis or chronic pancreatitis, or a disease of biliary tract, unspecified and the ERCP done for diagnostic purposes. I think in this instance it is best to code this case as K83.9 for disease of biliary tract, unspecified.

Fibrosis of pancreas (K86.8) is a specified disease of the pancreas.caused by such processes as necrosis (a form of cell injury that results in the premature death of cells in living tissue), inflammation or duct obstruction, in this instance the accessory pancreatic duct due to chronic pancreatitis.

Malignant neoplasm (cancer) may affect the head of pancreas, acute pancreatitis may be caused by the middle pancreas, and malignant neoplasm (cancer) may also affect the tail of pancreas. ICD-10 C25.0 is used to code malignant neoplasm of the head of pancreas, ICD-10 C25.2 is used to code malignant neoplasm of the tail of pancreas, and ICD-10 K85 is used to code acute pancreatitis causes by the middle pancreas. Do remember to refer to Chapter IV (appropriate codes in this chapter, i.e. E05.8, E07.0, E16-E31, E34.-) that may be used, if desired, as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere. For those wishing to identify the histological type of neoplasm, then provide the separate morphology codes from the section Morphology of neoplasms..

Cholangitis is an infection of the common bile duct, the tube that carries bile from the liver to the gallbladder and intestines. Bile is a liquid made by the liver that helps digest food. Cholangitis is usually caused by a bacterial infection, which can occur when the duct is blocked by something, such as a gallstone or tumor. The infection causing this condition may also spread to the liver. Use ICD-10 Code K83.0 for Cholangitis affecting the bile duct. You may need to code the infection as well.

Bile duct obstruction is a blockage in the tubes that carry bile from the liver to the gallbladder and small intestine. Either or both of the left and right hepatic ducts can be affected. If the obstruction is not due to calculus, then the ICD-10 code K83.1 must be used. The presence of gall stones in these ducts requires the use of the ICD-10 codes K80.3, K80.4 and K80.5

Do exercise caution when applying these codes (K80.3, K80.4 and K80.5) when cholelithiasis, or gallstones, a common syndrome in which hard stones composed of cholesterol or bile pigments form in the gallbladder is also reported.

References:

  1. Nicki, RC, Brian, RW & Stuart, HR 2010, Davidson’s Principles and Practice of Medicine, 21 edn, Churchill Livingstone Elsevier, Elsevier Health Sciences, Beijing, P.R. China
  2. William, DC 2010, Current clinical medicine, 2nd edn, Saunders Elsevier, Philadelphia, PA, USA
  3. World Health Organization 2011, Volume 1 Tabular list, International Statistical Classification of Diseases and Related Health Problems 10th Revision, 2010 edn, Geneva, Switzerland