NPI Atlas

ICD-10 Code for Compartment Syndrome

The default ICD-10-CM 2027 code for compartment syndrome (deep) (posterior) (traumatic) is T79.A0 – Compartment syndrome, unspecified (a header – choose a more specific code). More specific codes depend on the details documented, as listed in the official index (9 codes, 2 billable).

Main code: T79.A0 – Compartment syndrome, unspecified
Billable: No – header code

Index entries for Compartment syndrome

abdomen – T79.A3 (header)
lower extremity (hip, buttock, thigh, leg, foot, toes) – T79.A2 (header)
nontraumatic
- abdomen – M79.A3
- lower extremity (hip, buttock, thigh, leg, foot, toes) – M79.A2- (header)
- specified site NEC – M79.A9
- upper extremity (shoulder, arm, forearm, wrist, hand, fingers) – M79.A1- (header)
specified site NEC – T79.A9 (header)
upper extremity (shoulder, arm, forearm, wrist, hand, fingers) – T79.A1 (header)

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.