Is T79.8XXA a billable ICD-10-CM code?

Yes. T79.8XXA is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does T79.8XXA 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).

T79.8XXA

T79.8XXA — Other early complications of trauma, initial encounter

Billable / specific codeICD-10-CM

T79.8XXA is a billable, specific ICD-10-CM code for other early complications of trauma, 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 inherited from the categories above T79.8XXA

Also inherited, and the opposite of Excludes1: these conditions are not part of T79.8XXA, but a patient can have both, so you may code both.

Written on T79 — Certain early complications of trauma, not elsewhere classified

acute respiratory distress syndrome (J80)
complications occurring during or following medical procedures (T80-T88)
complications of surgical and medical care NEC (T80-T88)
newborn respiratory distress syndrome (P22.0)

Risk adjustment

T79.8XXA 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

T79.8XXA is named in 6 Medicare coverage policies — 6 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A52438Billing and Coding: Tetanus Immunization
A56421Billing and Coding: CT of the Abdomen and Pelvis
A56459Billing and Coding: Debridement Services
A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax

Code history

T79.8XXA has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share T79.8. If T79.8XXA is not quite right, the correct code is usually one of these.

Questions about T79.8XXA

Is T79.8XXA a billable ICD-10-CM code?: Yes. T79.8XXA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does T79.8XXA 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).