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ICD-10/T34.1XXD

T34.1XXD ICD-10-CM Code: Frostbite with tissue necrosis of neck, subsequent encounter

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, Appendix B.

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Official Registry Overview & Definition

Frostbite with tissue necrosis of neck, subsequent encounter is a billable ICD-10-CM diagnosis code (T34.1D).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T34.1XXD 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.

Change history

No changes recorded for this code — unchanged since the FY2016 baseline of the change ledger.

Verify Before Coding

  • Billable — reportable as written.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Contextual Map

Every relationship of T34.1XXD 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]
  • T33-T34 — Frostbite [Hierarchy]

Clinical classification (CCSR)

  • INJ058 — Effect of other external causes, subsequent encounter [CCSR]

Potential MS-DRG

  • DRG 949 — AFTERCARE WITH CC/MCC [MS-DRG]: “AFTERCARE WITH CC/MCC (MDC 23)”
  • DRG 950 — AFTERCARE WITHOUT CC/MCC [MS-DRG]: “AFTERCARE WITHOUT CC/MCC (MDC 23)”

Nearest codes (40)

  • T34 — Frostbite with tissue necrosis [Sibling]
  • T34.011D — Frostbite with tissue necrosis of right ear, subsequent encounter [Sibling]
  • T34.011S — Frostbite with tissue necrosis of right ear, sequela [Sibling]
  • T34.012 — Frostbite with tissue necrosis of left ear [Sibling]
  • T34.012A — Frostbite with tissue necrosis of left ear, initial encounter [Sibling]
  • T34.012D — Frostbite with tissue necrosis of left ear, subsequent encounter [Sibling]
  • T34.012S — Frostbite with tissue necrosis of left ear, sequela [Sibling]
  • T34.019 — Frostbite with tissue necrosis of unspecified ear [Sibling]
  • and 32 more

Relationships & Classification

Clinical classification (AHRQ CCSR):INJ058 — Effect of other external causes, subsequent encounter (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 2 MS-DRGs: DRG 949 (MDC 23), DRG 950 (MDC 23).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Frequently Asked Questions (FAQ) & Clinical Guidance

Does T34.1XXD 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 T34.1XXD in its code family, with their registry titles.

  • T34.09XA — Frostbite with tissue necrosis of other part of head, initial encounter
  • T34.09XD — Frostbite with tissue necrosis of other part of head, subsequent encounter
  • T34.09XS — Frostbite with tissue necrosis of other part of head, sequela
  • T34.1 — Frostbite with tissue necrosis of neck
  • T34.1XXA — Frostbite with tissue necrosis of neck, initial encounter
  • T34.1XXS — Frostbite with tissue necrosis of neck, sequela
  • T34.2 — Frostbite with tissue necrosis of thorax
  • T34.2XXA — Frostbite with tissue necrosis of thorax, initial encounter
  • T34.2XXD — Frostbite with tissue necrosis of thorax, subsequent encounter
  • T34.2XXS — Frostbite with tissue necrosis of thorax, sequela

View all codes in the T34 family