T79.A12

Traumatic compartment syndrome of left upper extremity

Not billable — category only FY2026 2025-10-01 → 2026-09-30

Exclusions 9 never code together

T79code

Excludes2

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

T79.Acode

Excludes1

fibromyalgia (M79.7)M79.7
nontraumatic compartment syndrome (M79.A-)M79.A-

Excludes2

traumatic ischemic infarction of muscle (T79.6)T79.6

S00-T88chapter

Excludes2

birth trauma (P10-P15)P10-P15
obstetric trauma (O70-O71)O70-O71

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

7th character 3

A initial encounter

D subsequent encounter

S sequela

Instructional notes 3

S00-T88chapter

Notes

Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

Use additional code

code to identify any retained foreign body, if applicable (Z18.-)Z18.-

Index entries leading here 2 filed at T79.A1

The index files this at T79.A1. The tabular extends it — laterality, staging, or the 7th character — so these entries lead to the family rather than to T79.A12 exactly.

Syndrome — see also Disease
- compartment (deep) (posterior) (traumatic) T79.A0
  - upper extremity (shoulder, arm, forearm, wrist, hand, fingers) T79.A1
Compartment syndrome (deep) (posterior) (traumatic) T79.A0
- upper extremity (shoulder, arm, forearm, wrist, hand, fingers) T79.A1

Alongside this code 2 same parent — T79.A1

T79.A11 Traumatic compartment syndrome of right upper extremity category T79.A19 Traumatic compartment syndrome of unsp upper extremity category

Subordinate codes 3

T79.A12A Traumatic compartment syndrome of left upper extremity, init T79.A12D Traumatic compartment syndrome of left upper extremity, subs T79.A12S Traumatic compartment syndrome of l up extrem, sequela

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable: no
Code set: FY2026
Parent: T79.A1
Block: T07-T88
Siblings: 2
Subordinate: 3

Present FY2024–FY2027.