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T79.A12Non-billableSave

T79.A12 - Traumatic compartment syndrome of left upper extremity

ICD-10-CM Chapter 19: Injury, poisoning and certain other consequences of external causes · T79 Certain early complications of trauma (T79) · Subcategory of T79.A1 · FY2027

Coding Guidance

T79.A12 requires a 7th character. Report the code below that matches the documentation, for example A for initial encounter, D for subsequent encounter, S for sequela.

7th Character

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

Includes, Excludes and Coding Notes

Excludes 1 — Not Coded HereFrom T79.A

Mutually exclusive: these conditions are never reported together with this code.

  • fibromyalgia (M79.7)
  • nontraumatic compartment syndrome (M79.A-)
Excludes 2 — Not Included HereFrom T79.A

Not part of this code; report both codes when the patient has both conditions.

  • traumatic ischemic infarction of muscle (T79.6)
Excludes 2 — Not Included HereFrom T79

Not part of this code; report both codes when the patient has both conditions.

  • 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)
Excludes 2 — Not Included HereFrom Chapter S00-T88

Not part of this code; report both codes when the patient has both conditions.

  • birth trauma (P10-P15)
  • obstetric trauma (O70-O71)
Use Additional CodeFrom Chapter S00-T88

Add a secondary code to identify the associated condition or cause when it is documented.

  • code to identify any retained foreign body, if applicable (Z18.-)
NotesFrom Chapter S00-T88

Instructional notes from the ICD-10-CM tabular list.

  • 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.

More Specific Codes (3)

T79.A12ATraumatic compartment syndrome of left upper extremity, initial encounter→T79.A12DTraumatic compartment syndrome of left upper extremity, subsequent encounter→T79.A12STraumatic compartment syndrome of left upper extremity, sequela→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with T79.A12.