Medical Coding and Billing Vocabulary

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Basic HIT Nomenclature and HIPAA

[By Richard J. Mata; MD, MIS, CMP™ [Hon]

For the Health Information Technology [HIT] department of a hospital, clinic or medical practice and its coders, the following medical vocabularies are mandated by the Health Insurance Portability and Accountability Act [HIPAA].


For diseases: the 9th or 10th International Classification of Diseases (ICD) Clinical Modification should be used.  ICD9-CM is maintained by the Centers for Disease Control National Center for Health Statistics, while ICD-10 is maintained by the World Health Organization.


For medical procedures: a combination of ICD-9-CM, Current Procedural Terminology maintained by the American Medical Association, the Current Dental Terminology maintained by the American Dental Association, and Healthcare Common Procedure Coding System (HCPCS) maintained by CMS, which is also used for medical devices.


For drugs: these should be coded according to their National Drug Code classification.


“A recent change to Medicare policy made by the Centers for Medicare & Medicaid Services (CMS) helps ensure claims processing isn’t delayed when the only missing information on the CMS-1490S form is the provider or supplier’s National Provider Identifier (NPI).

CMS Transmittal 1747, Change Request 6434, issued May 22, notifies A/B Medicare Administrative Contractors (MAC) and carriers of editorial changes to Medicare policy in Pub. 100-04, Medicare Claims Processing Manual, chapter 1 regarding the monitoring of claims submission violations and the handling of incomplete or invalid claims.

In either case, as stated in the transmittal, “If the beneficiary furnishes all other information but fails to supply the provider or supplier’s NPI, the contractor shall not return the claim but rather look up the provider or supplier’s NPI using the NPI registry.”


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