ICD CM Codes
International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) Note: The July 2007 release of ICD-10-CM is now available for review, however, it is not yet implemented for practical use.
The National Center for Health Statistics (NCHS), the Federal agency responsible for use of the International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10) in the United States, has developed a clinical modification of the classification for morbidity purposes. The ICD-10 is used to code and classify mortality data from death certificates, having replaced ICD-9 for this purpose as of January 1, 1999. ICD-10-CM is planned as the replacement for ICD-9-CM, volumes 1 and 2.
The ICD-10 is copyrighted by the World Health Organization (WHO), which owns and publishes the classification. WHO has authorized the development of an adaptation of ICD-10 for use in the United States for U.S. government purposes. As agreed, all modifications to the ICD-10 must conform to WHO conventions for the ICD. ICD-10-CM was developed following a thorough evaluation by a Technical Advisory Panel and extensive additional consultation with physician groups, clinical coders, and others to assure clinical accuracy and utility.
The entire draft of the Tabular List of ICD-10-CM, and the preliminary crosswalk between ICD-9-CM and ICD-10-CM were made available on the NCHS website for public comment. The public comment period ran from December 1997 through February 1998. The American Hospital Association and the American Health Information Management Association conducted a field test for ICD-10-CM in the summer of 2003, with a subsequent report.
The clinical modification represents a significant improvement over ICD-9-CM and ICD-10. Specific improvements include:
- addition of information relevant to ambulatory and managed care encounters
- expanded injury codes
- creation of combination diagnosis/symptom codes to reduce the number of codes needed to fully describe a condition
- addition of sixth and seventh characters
- incorporation of common 4th and 5th digit subclassifications
- greater specificity in code assignment
The new structure will allow further expansion than was possible with ICD-9-CM.
An updated July 2007 release of ICD-10-CM is now available for public viewing. However, the codes in ICD-10-CM are not currently valid for any purpose or use (as of July 1, 2008). There is not yet an anticipated implementation date for the ICD-10-CM. Implementation will be based on the process for adoption of standard under the Health Insurance Portability and Accountability Act of 1996.
World Health Organization (WHO)
International Classification of Diseases (ICD)
ICD-10 was endorsed by the Forty-third World Health Assembly in May 1990 and came into use in WHO Member States as from 1994. The classification is the latest in a series which has its origins in the 1850s. The first edition, known as the International List of Causes of Death, was adopted by the International Statistical Institute in 1893. WHO took over the responsibility for the ICD at its creation in 1948 when the Sixth Revision, which included causes of morbidity for the first time, was published.
The ICD has become the international standard diagnostic classification for all general epidemiological and many health management purposes. These include the analysis of the general health situation of population groups and monitoring of the incidence and prevalence of diseases and other health problems in relation to other variables such as the characteristics and circumstances of the individuals affected.
It is used to classify diseases and other health problems recorded on many types of health and vital records including death certificates and hospital records. In addition to enabling the storage and retrieval of diagnostic information for clinical and epidemiological purposes, these records also provide the basis for the compilation of national mortality and morbidity statistics by WHO Member States.
International Statistical Classification of Diseases and Related Health Problems – 10th Revision Version for 2007
Tabular List of inclusions and four-character subcategories
|I||A00-B99||Certain infectious and parasitic diseases|
|III||D50-D89||Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism|
|IV||E00-E90||Endocrine, nutritional and metabolic diseases|
|V||F00-F99||Mental and behavioural disorders|
|VI||G00-G99||Diseases of the nervous system|
|VII||H00-H59||Diseases of the eye and adnexa|
|VIII||H60-H95||Diseases of the ear and mastoid process|
|IX||I00-I99||Diseases of the circulatory system|
|X||J00-J99||Diseases of the respiratory system|
|XI||K00-K93||Diseases of the digestive system|
|XII||L00-L99||Diseases of the skin and subcutaneous tissue|
|XIII||M00-M99||Diseases of the musculoskeletal system and connective tissue|
|XIV||N00-N99||Diseases of the genitourinary system|
|XV||O00-O99||Pregnancy, childbirth and the puerperium|
|XVI||P00-P96||Certain conditions originating in the perinatal period|
|XVII||Q00-Q99||Congenital malformations, deformations and chromosomal abnormalities|
|XVIII||R00-R99||Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified|
|XIX||S00-T98||Injury, poisoning and certain other consequences of external causes|
|XX||V01-Y98||External causes of morbidity and mortality|
|XXI||Z00-Z99||Factors influencing health status and contact with health services|
|XXII||U00-U99||Codes for special purposes|
Look at the above index, note the first entry under Chapter 1, Blocks and Title is
1 (chapter), A00-B99 (block) and is termed “Certain infectious and parasitic diseases.
Under Chapter 1, the following blocks are further subcategorized.
|A00-A09||Intestinal infectious diseases|
|A20-A28||Certain zoonotic bacterial diseases|
|A30-A49||Other bacterial diseases|
|A50-A64||Infections with a predominantly sexual mode of transmission|
|A65-A69||Other spirochaetal diseases|
|A70-A74||Other diseases caused by chlamydiae|
|A80-A89||Viral infections of the central nervous system|
|A90-A99||Arthropod-borne viral fevers and viral haemorrhagic fevers|
|B00-B09||Viral infections characterized by skin and mucous membrane lesions|
|B20-B24||Human immunodeficiency virus [HIV] disease|
|B25-B34||Other viral diseases|
|B85-B89||Pediculosis, acariasis and other infestations|
|B90-B94||Sequelae of infectious and parasitic diseases|
|B95-B97||Bacterial, viral and other infectious agents|
|B99||Other infectious diseases|
Now look at the next table and you will see the individual block numbers listed under the subcategory of Intestinal infectious diseases.
Block A00 to A00.9 (intestinal infectious diseases)
|A00.0||Cholera due to Vibrio cholerae 01, biovar cholerae|
|A00.1||Cholera due to Vibrio cholerae 01, biovar eltor|
Let’s code a disease:
Using the above information, here is an example of how you would code using ICD10.
If the patient’s chart showed s/he had cholera due to Vibrio cholerae, it would be coded from Chapter 1 (listed above), subcategory A00-B99, then finding the detail of A00 to A00.9. You can see the A00.0 has the description you want, so you would code it as A00.01. The book will have an alpha lookup just like the ICD9 has always had.
Where to Find the Information on ICD10. You may review the actual codes in PDF Formats – Most of the documents on the following website are provided as downloadable ZIP files in Adobe PDF Format.
New Files, July 2007
- Table of Drugs and Chemicals
- General Equivalence Mapping Files
On Friday, August 15, 2008, HHS issued a proposed rule that would require healthcare providers to
adopt ICD-10 code sets for electronic health transactions by October 2011,
Government Health IT reports.
Healthcare providers currently use ICD-9 code sets, which were developed about
30 years ago and no longer can be expanded effectively to include codes for new
diseases and procedures. ICD-9 can accommodate about 17,000 codes, while ICD-10
had space for more than 155,000 codes.
In a statement, HHS Secretary Mike Leavitt said that adopting ICD-10 code sets
is a necessary step toward developing a Nationwide Health Information
Infrastructure. He added, “The greatly expanded ICD-10 code sets will enable HHS
to fully support quality reporting, pay for performance, biosurveillance and
other critical activities.”
This information is provided so that you will understand how you can easily adapt to a new coding system based upon what you have learned with Meditec’s Coding Training Program. Once you understand how basic ICD and CPT codes work, you will be able to move into any other coding devised without any difficulty.
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