T34.81 ICD-10-CM Code: Frostbite with tissue necrosis of ankle
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for T34.81 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.
- hypothermia and other effects of reduced temperature (T68, T69.-) Compare T34.81 vs T68 →
Frequently Compared Codes
The official Excludes notes on T34.81 name these codes. Each comparison page covers when the two can — or must not — be reported together.
Change history
No changes recorded for this code — unchanged since the FY2016 baseline of the change ledger.
Verify Before Coding
- Not billable as written — a more specific code is required: T34.811A, T34.811D, T34.811S, T34.812A, T34.812D.
- Requires a 7th character. "The appropriate 7th character is to be added to each code from category T34" Options: T34.811A, T34.811D, T34.811S, T34.812A, T34.812D, T34.812S
From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.
Referenced by Other Codes
Official ICD-10-CM tabular notes on other codes that name T34.81 or its code family.
1 Excludes2 notes: T34.7 (via T34.8.-).
Contextual Map
Every relationship of T34.81 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.
Hierarchy
- S00-T88 — Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) (S00-T88) [Hierarchy]
Referenced by Excludes2 notes
- T34.7 — Frostbite with tissue necrosis of knee and lower leg [Excludes2](via T34.8.-): “frostbite with tissue necrosis of ankle and foot (T34.8-)” · check together
Nearest codes (40)
- T34 — Frostbite with tissue necrosis [Sibling]
- T34.61XD — Frostbite with tissue necrosis of right hip and thigh, subsequent encounter [Sibling]
- T34.61XS — Frostbite with tissue necrosis of right hip and thigh, sequela [Sibling]
- T34.62 — Frostbite with tissue necrosis of left hip and thigh [Sibling]
- T34.62XA — Frostbite with tissue necrosis of left hip and thigh, initial encounter [Sibling]
- T34.62XD — Frostbite with tissue necrosis of left hip and thigh, subsequent encounter [Sibling]
- T34.62XS — Frostbite with tissue necrosis of left hip and thigh, sequela [Sibling]
- T34.7 — Frostbite with tissue necrosis of knee and lower leg [Sibling]
- and 32 more
Frequently Asked Questions (FAQ) & Clinical Guidance
Can T34.81 be billed directly?
No. T34.81 (Frostbite with tissue necrosis of ankle) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Does T34.81 require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category T34.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to T34.81 in its code family, with their registry titles.
- T34.72 — Frostbite with tissue necrosis of left knee and lower leg
- T34.72XA — Frostbite with tissue necrosis of left knee and lower leg, initial encounter
- T34.72XD — Frostbite with tissue necrosis of left knee and lower leg, subsequent encounter
- T34.72XS — Frostbite with tissue necrosis of left knee and lower leg, sequela
- T34.8 — Frostbite with tissue necrosis of ankle, foot, and toe(s)
- T34.811 — Frostbite with tissue necrosis of right ankle
- T34.811A — Frostbite with tissue necrosis of right ankle, initial encounter
- T34.811D — Frostbite with tissue necrosis of right ankle, subsequent encounter
- T34.811S — Frostbite with tissue necrosis of right ankle, sequela
- T34.812 — Frostbite with tissue necrosis of left ankle