MCMCB Pro
T79.A19D

T79.A19DTraumatic compartment syndrome of unspecified upper extremity, subsequent encounter

Billable / specific codeICD-10-CMPOA exempt

T79.A19D is a billable, specific ICD-10-CM code for traumatic compartment syndrome of unspecified upper extremity, subsequent encounter. It is valid for submission on a claim.

7th character "D" — subsequent encounter

The appropriate 7th character is to be added to each code from category T79

A
initial encounter
D
subsequent encounter
S
sequela

Risk adjustment

T79.A19D does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Related codes at this level

Codes that share T79.A19. If T79.A19D is not quite right, the correct code is usually one of these.

Questions about T79.A19D

Is T79.A19D a billable ICD-10-CM code?
Yes. T79.A19D is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does T79.A19D sit in the tabular list?
Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Certain early complications of trauma (T79).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.