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    v1.0.28
    OpenPayerBilling CodesFrostbiteICD-10-CM t34-frostbite-with-tissue-necrosis
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    ICD-10-CM Code For Frostbite With Tissue Necrosis: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group T34 includes frostbite injuries complicated by tissue necrosis, specifying the extent and depth of cold-induced tissue death. These ICD-10-CM diagnosis codes are used to document clinical scenarios involving varying degrees of necrosis from superficial skin loss to deep tissue involvement including muscle and bone. Accurate coding within the ICD-10-CM T34 group supports proper claim adjudication and complete clinical documentation for appropriate reimbursement.

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    ICD-10-CM T34: Frostbite With Tissue Necrosis Overview

    The ICD-10-CM T34 group covers frostbite injuries that have progressed to tissue death, affecting skin, subcutaneous tissue, muscle, bone, or combinations of these tissues. These diagnoses target cold-related thermal injury to peripheral structures and can range from localized necrosis to extensive tissue loss. Accurate coding is important because it reflects severity, supports medical necessity, and influences reimbursement for wound care, surgical interventions, and rehabilitation.

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    When to Use

    Use a code from this group when clinical documentation confirms frostbite with necrosis of skin, subcutaneous tissue, muscle, bone, or combined tissues. Select the code that matches the documented anatomical site and degree of tissue involvement to reflect severity for coding and billing purposes.

    ICD-10-CM Codes

    111 rows

    ICD-10-CM CodeDescription
    T34.011AFrostbite with tissue necrosis of right ear, initial encounter
    T34.011DFrostbite with tissue necrosis of right ear, subsequent encounter
    T34.011SFrostbite with tissue necrosis of right ear, sequela
    T34.012AFrostbite with tissue necrosis of left ear, initial encounter
    T34.012DFrostbite with tissue necrosis of left ear, subsequent encounter
    T34.012SFrostbite with tissue necrosis of left ear, sequela
    T34.019AFrostbite with tissue necrosis of unspecified ear, initial encounter
    T34.019DFrostbite with tissue necrosis of unspecified ear, subsequent encounter
    T34.019SFrostbite with tissue necrosis of unspecified ear, sequela
    T34.02XAFrostbite with tissue necrosis of nose, initial encounter
    T34.02XDFrostbite with tissue necrosis of nose, subsequent encounter
    T34.02XSFrostbite with tissue necrosis of nose, sequela
    T34.09XAFrostbite with tissue necrosis of other part of head, initial encounter
    T34.09XDFrostbite with tissue necrosis of other part of head, subsequent encounter
    T34.09XSFrostbite with tissue necrosis of other part of head, sequela
    T34.1XXAFrostbite with tissue necrosis of neck, initial encounter
    T34.1XXDFrostbite with tissue necrosis of neck, subsequent encounter
    T34.1XXSFrostbite with tissue necrosis of neck, sequela
    T34.2XXAFrostbite with tissue necrosis of thorax, initial encounter
    T34.2XXDFrostbite with tissue necrosis of thorax, subsequent encounter

    Showing 1–20 of 111

    DRG Codes

    4 rows

    DRG CodeDescription
    922Other Injury, Poisoning and Toxic Effect Diagnoses with MCC
    923Other Injury, Poisoning and Toxic Effect Diagnoses without MCC
    949Aftercare with CC/MCC
    950Aftercare without CC/MCC

    Typical Clinical Scenarios

    • An adult mountaineer is brought to the emergency department after prolonged exposure to subfreezing temperatures and presents with cold, numb, darkened tissue of multiple toes with clearly demarcated full‑thickness tissue necrosis; urgent assessment shows gangrenous changes requiring debridement and possible amputation. The acute event and documented tissue necrosis lead to assignment of a frostbite with tissue necrosis code. Typical codes: T34.519A, T34.529A
    • An elderly nursing home resident with peripheral vascular disease is evaluated in clinic weeks after an episode of cold exposure; the patient has chronic nonhealing necrotic lesions on fingertips with dry black eschar and progressive tissue loss, being managed conservatively and followed for wound care. Because there is established tissue necrosis from prior frostbite and the encounter is for ongoing care rather than the initial event, a diagnosis code reflecting frostbite with tissue necrosis for a subsequent or sequela visit is used. Typical codes: T34.519D, T34.529D
    • A middle‑aged construction worker is admitted with infected necrotic frostbite of the hands after falling asleep outdoors; he requires IV antibiotics and surgical consultation for necrotic tissue, and the necrosis has produced a systemic complication with cellulitis and sepsis. A frostbite with tissue necrosis code is assigned to capture the local tissue death as a comorbidity contributing to the infectious complication and hospital management. Typical codes: T34.531A, T34.539A

    Related Codes

    T33-SUPERFICIAL-FROSTBITE

    ICD-10-CM Code For Superficial Frostbite: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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