ICD-10-CM diagnosis codes
Intro to ICD-10
The International Classification of Diseases (ICD) is used worldwide to identify health trends and statistics. ICD-10 is the most current U.S. version. It is a set of diagnostic codes that provides information for clinical, research, and reimbursement purposes — the information that Medicare and other payers need to justify medical necessity.
ICD-10 has two parts: ICD-10-CM (clinical modification) and ICD-10-PCS (procedural coding system). ICD-10-PCS is used by facilities to report procedures. ICD-10-CM is used for reporting office and outpatient services, in all U.S. healthcare settings.
Adhering to the ICD-10-CM coding rules when assigning diagnosis codes is required under HIPAA and results in consistent application of the codes set.
| Classification system | Number of codes | Digits |
|---|---|---|
| ICD-10-CM |
68,000+ |
|
There are conventions and guidelines that, when applied incorrectly, can lead to claim denials. These include:
Coding resources
The Academy offers a number of resources to help determine which ICD-10-CM code is needed. You can also use the tabs above to navigate to other pages in this resource center.
Quick coding sheets from the Academy
ICD-10-CM Quick Coder (PDF)
Dermatitis Quick Coder (PDF)
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