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    v1.0.28
    OpenPayerBilling CodesBurns and corrosions of external body surface, specified by siteICD-10-CM t21-burn-and-corrosion-of-trunk
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    ICD-10-CM Code For Burn And Corrosion Of Trunk: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group T21 includes burns and corrosions located on the trunk, specifying depth and extent of injury such as superficial, partial-thickness, and full-thickness burns. These ICD-10-CM diagnosis codes are used to document acute thermal or chemical injuries to the chest, abdomen, and back, capturing clinical severity and affected surface area. Accurate coding within the ICD-10-CM T21 group supports proper claim adjudication and complete clinical documentation for appropriate reimbursement.

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    ICD-10-CM T21: Burn And Corrosion Of Trunk Overview

    The ICD-10-CM T21 group includes diagnoses for burns and corrosions affecting the trunk, including the chest, back, and abdomen. These codes capture injury depth and extent on the central body region and are used across acute care and burn specialty settings. Accurate coding matters for clinical records, appropriate claim processing, and reflecting the severity of injury for reimbursement.

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    When to Use

    Use a code from this group when the primary diagnosis is a burn or corrosion located on the trunk and documentation specifies the depth and extent of the injury. Select the specific code that reflects the anatomic site and burn severity as documented in the medical record to ensure accurate reporting.

    ICD-10-CM Codes

    216 rows

    ICD-10-CM CodeDescription
    T21.00XABurn of unspecified degree of trunk, unspecified site, initial encounter
    T21.00XDBurn of unspecified degree of trunk, unspecified site, subsequent encounter
    T21.00XSBurn of unspecified degree of trunk, unspecified site, sequela
    T21.01XABurn of unspecified degree of chest wall, initial encounter
    T21.01XDBurn of unspecified degree of chest wall, subsequent encounter
    T21.01XSBurn of unspecified degree of chest wall, sequela
    T21.02XABurn of unspecified degree of abdominal wall, initial encounter
    T21.02XDBurn of unspecified degree of abdominal wall, subsequent encounter
    T21.02XSBurn of unspecified degree of abdominal wall, sequela
    T21.03XABurn of unspecified degree of upper back, initial encounter
    T21.03XDBurn of unspecified degree of upper back, subsequent encounter
    T21.03XSBurn of unspecified degree of upper back, sequela
    T21.04XABurn of unspecified degree of lower back, initial encounter
    T21.04XDBurn of unspecified degree of lower back, subsequent encounter
    T21.04XSBurn of unspecified degree of lower back, sequela
    T21.05XABurn of unspecified degree of buttock, initial encounter
    T21.05XDBurn of unspecified degree of buttock, subsequent encounter
    T21.05XSBurn of unspecified degree of buttock, sequela
    T21.06XABurn of unspecified degree of male genital region, initial encounter
    T21.06XDBurn of unspecified degree of male genital region, subsequent encounter

    Showing 1–20 of 216

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    DRG Codes

    10 rows

    DRG CodeDescription
    604Trauma to the Skin, Subcutaneous Tissue and Breast with MCC
    605Trauma to the Skin, Subcutaneous Tissue and Breast without MCC
    927Extensive Burns or Full Thickness Burns with MV >96 Hours with Skin Graft
    928Full Thickness Burn with Skin Graft or Inhalation Injury with CC/MCC
    929Full Thickness Burn with Skin Graft or Inhalation Injury without CC/MCC
    933Extensive Burns or Full Thickness Burns with MV >96 Hours without Skin Graft
    934Full Thickness Burn without Skin Graft or Inhalation Injury
    935Non-Extensive Burns
    949Aftercare with CC/MCC
    950Aftercare without CC/MCC

    Typical Clinical Scenarios

    • A middle-aged adult presents to the emergency department after accidental contact with boiling water that resulted in partial-thickness and full-thickness burns across the anterior chest and abdomen. The patient has acute pain, blistering, and areas of charred skin involving multiple body surface areas on the trunk; initial management focuses on stabilization, wound assessment, tetanus status, and burn depth determination, and an external trunk burn diagnosis from this group is assigned to capture site and laterality information. Typical codes: T21.01XA, T21.03XA
    • An elderly nursing home resident is evaluated for a pressure-related thermal injury on the back after prolonged exposure to a heating pad, present for several days with necrotic areas and signs of infection; the issue is being managed as an ongoing wound with dressing changes and wound care consultation. Because the condition is a trunk burn/corrosion identified during follow-up care rather than an initial emergent event, a code from this group reflecting a subsequent encounter or non-acute treatment episode is used. Typical codes: T21.01XD, T21.03XD
    • A young adult is seen in the outpatient clinic for scar management and reconstructive planning after prior flame burns to the chest and abdomen treated months earlier; the visit addresses sequelae such as hypertrophic scarring and restricted range of motion but documents the healed burn sites on the trunk. A code from this group indicating sequela or aftercare of trunk burns is assigned to record the healed burn location and link current complications to the prior injury. Typical codes: T21.01XS, T21.03XS

    Related Codes

    T20-BURN-AND-CORROSION-OF-HEAD-FACE-NECK

    ICD-10-CM Code For Burn And Corrosion Of Head Face And Neck: Group Overview

    T22-BURNS-AND-CORROSIONS-UPPER-LIMB

    ICD-10-CM Code For Burn And Corrosion Of Shoulder And Upper Limb, Except Wrist And Hand: Group Overview

    T23-BURN-AND-CORROSION-OF-WRIST-AND-HAND

    ICD-10-CM Code For Burn And Corrosion Of Wrist And Hand: Group Overview

    T24-BURN-AND-CORROSION-LOWER-LIMB

    ICD-10-CM Code For Burn And Corrosion Of Lower Limb Except Ankle And Foot: Group Overview

    T25-BURN-AND-CORROSION-OF-ANKLE-AND-FOOT

    ICD-10-CM Code For Burn And Corrosion Of Ankle And Foot: 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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