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ICD-10/T79

T79 ICD-10-CM Code: Certain early complications of trauma, not elsewhere classified

Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Certain early complications of trauma, not elsewhere classified is a non-billable ICD-10-CM category code (T79). A more specific billable subcode must be selected for claims submission.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T79 in the official ICD-10-CM tabular list.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

  • 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)

Frequently Asked Questions (FAQ) & Clinical Guidance

Can T79 be billed directly?

No. T79 (Certain early complications of trauma, not elsewhere classified) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

Does T79 require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category T79; A: initial encounter; D: subsequent encounter; S: sequela.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to T79 in its code family, with their registry titles.

  • T79.0 — Air embolism (traumatic)
  • T79.0XXA — Air embolism (traumatic), initial encounter
  • T79.0XXD — Air embolism (traumatic), subsequent encounter
  • T79.0XXS — Air embolism (traumatic), sequela
  • T79.1 — Fat embolism (traumatic)
  • T79.1XXA — Fat embolism (traumatic), initial encounter
  • T79.1XXD — Fat embolism (traumatic), subsequent encounter
  • T79.1XXS — Fat embolism (traumatic), sequela
  • T79.2 — Traumatic secondary and recurrent hemorrhage and seroma
  • T79.2XXA — Traumatic secondary and recurrent hemorrhage and seroma, initial encounter
  • T79.2XXD — Traumatic secondary and recurrent hemorrhage and seroma, subsequent encounter
  • T79.2XXS — Traumatic secondary and recurrent hemorrhage and seroma, sequela
  • T79.4 — Traumatic shock
  • T79.4XXA — Traumatic shock, initial encounter
  • T79.4XXD — Traumatic shock, subsequent encounter
  • T79.4XXS — Traumatic shock, sequela
  • T79.5 — Traumatic anuria
  • T79.5XXA — Traumatic anuria, initial encounter
  • T79.5XXD — Traumatic anuria, subsequent encounter
  • T79.5XXS — Traumatic anuria, sequela
  • T79.6 — Traumatic ischemia of muscle
  • T79.6XXA — Traumatic ischemia of muscle, initial encounter
  • T79.6XXD — Traumatic ischemia of muscle, subsequent encounter
  • T79.6XXS — Traumatic ischemia of muscle, sequela
  • T79.7 — Traumatic subcutaneous emphysema
  • T79.7XXA — Traumatic subcutaneous emphysema, initial encounter
  • T79.7XXD — Traumatic subcutaneous emphysema, subsequent encounter
  • T79.7XXS — Traumatic subcutaneous emphysema, sequela
  • T79.8 — Other early complications of trauma
  • T79.8XXA — Other early complications of trauma, initial encounter
  • T79.8XXD — Other early complications of trauma, subsequent encounter
  • T79.8XXS — Other early complications of trauma, sequela
  • T79.9 — Unspecified early complication of trauma
  • T79.9XXA — Unspecified early complication of trauma, initial encounter
  • T79.9XXD — Unspecified early complication of trauma, subsequent encounter
  • T79.9XXS — Unspecified early complication of trauma, sequela
  • T79.A — Traumatic compartment syndrome
  • T79.A0 — Compartment syndrome, unspecified
  • T79.A0XA — Compartment syndrome, unspecified, initial encounter
  • T79.A0XD — Compartment syndrome, unspecified, subsequent encounter
  • T79.A0XS — Compartment syndrome, unspecified, sequela
  • T79.A1 — Traumatic compartment syndrome of upper extremity
  • T79.A11 — Traumatic compartment syndrome of right upper extremity
  • T79.A11A — Traumatic compartment syndrome of right upper extremity, initial encounter
  • T79.A11D — Traumatic compartment syndrome of right upper extremity, subsequent encounter
  • T79.A11S — Traumatic compartment syndrome of right upper extremity, sequela
  • T79.A12 — Traumatic compartment syndrome of left upper extremity
  • T79.A12A — Traumatic compartment syndrome of left upper extremity, initial encounter
  • T79.A12D — Traumatic compartment syndrome of left upper extremity, subsequent encounter
  • T79.A12S — Traumatic compartment syndrome of left upper extremity, sequela
  • T79.A19 — Traumatic compartment syndrome of unspecified upper extremity
  • T79.A19A — Traumatic compartment syndrome of unspecified upper extremity, initial encounter
  • T79.A19D — Traumatic compartment syndrome of unspecified upper extremity, subsequent encounter
  • T79.A19S — Traumatic compartment syndrome of unspecified upper extremity, sequela
  • T79.A2 — Traumatic compartment syndrome of lower extremity
  • T79.A21 — Traumatic compartment syndrome of right lower extremity
  • T79.A21A — Traumatic compartment syndrome of right lower extremity, initial encounter
  • T79.A21D — Traumatic compartment syndrome of right lower extremity, subsequent encounter
  • T79.A21S — Traumatic compartment syndrome of right lower extremity, sequela
  • T79.A22 — Traumatic compartment syndrome of left lower extremity
  • T79.A22A — Traumatic compartment syndrome of left lower extremity, initial encounter
  • T79.A22D — Traumatic compartment syndrome of left lower extremity, subsequent encounter
  • T79.A22S — Traumatic compartment syndrome of left lower extremity, sequela
  • T79.A29 — Traumatic compartment syndrome of unspecified lower extremity
  • T79.A29A — Traumatic compartment syndrome of unspecified lower extremity, initial encounter
  • T79.A29D — Traumatic compartment syndrome of unspecified lower extremity, subsequent encounter
  • T79.A29S — Traumatic compartment syndrome of unspecified lower extremity, sequela
  • T79.A3 — Traumatic compartment syndrome of abdomen
  • T79.A3XA — Traumatic compartment syndrome of abdomen, initial encounter
  • T79.A3XD — Traumatic compartment syndrome of abdomen, subsequent encounter
  • T79.A3XS — Traumatic compartment syndrome of abdomen, sequela
  • T79.A9 — Traumatic compartment syndrome of other sites
  • T79.A9XA — Traumatic compartment syndrome of other sites, initial encounter
  • T79.A9XD — Traumatic compartment syndrome of other sites, subsequent encounter
  • T79.A9XS — Traumatic compartment syndrome of other sites, sequela