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ICD-10-CM 2027

ICD-10 code for lower extremity compartment syndrome

T79.A2

Traumatic compartment syndrome of lower extremity

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Compartment syndrome (deep) (posterior) (traumatic) › lower extremity (hip, buttock, thigh, leg, foot, toes)”. Page updated September 29, 2026.

About coding lower extremity compartment syndrome

The ICD-10-CM code for lower extremity compartment syndrome is T79.A2 (Traumatic compartment syndrome of lower extremity).

Within T79.A (traumatic compartment syndrome), T79.A2 is specifically for traumatic compartment syndrome of lower extremity. Related codes cover compartment syndrome, unspecified (T79.A0), of upper extremity (T79.A1), of abdomen (T79.A3) and of other sites (T79.A9).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about lower extremity compartment syndrome ICD-10 codes

What is the ICD-10 code for lower extremity compartment syndrome?

T79.A2 — Traumatic compartment syndrome of lower extremity (a header code; report a more specific subcode).

Is T79.A2 billable?

No. T79.A2 is a header code. Report one of its more specific subcodes instead.