Is T79.7XXA a billable ICD-10-CM code?

Yes. T79.7XXA is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does T79.7XXA 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).

T79.7XXA

T79.7XXA — Traumatic subcutaneous emphysema, initial encounter

Billable / specific codeICD-10-CM

T79.7XXA is a billable, specific ICD-10-CM code for traumatic subcutaneous emphysema, initial encounter. It is valid for submission on a claim.

7th character "A" — initial encounter

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

A: initial encounter
D: subsequent encounter
S: sequela

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

emphysema NOS (J43)
emphysema (subcutaneous) resulting from a procedure (T81.82)

Risk adjustment

T79.7XXA 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.

Medicare coverage

T79.7XXA is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
A57204Billing and Coding: MRI and CT Scans of the Head and Neck

Related codes at this level

Codes that share T79.7. If T79.7XXA is not quite right, the correct code is usually one of these.

Questions about T79.7XXA

Is T79.7XXA a billable ICD-10-CM code?: Yes. T79.7XXA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does T79.7XXA 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).