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ICD-10/T67.02XA

T67.02XA ICD-10-CM Code: Exertional heatstroke, initial 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.

  • MS-DRG 922 — OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITH MCC (MDC 21)
  • MS-DRG 923 — OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITHOUT MCC (MDC 21)

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

Exertional heatstroke, initial encounter is a billable ICD-10-CM diagnosis code (T67.02A).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T67.02XA in the official ICD-10-CM tabular list.

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Excludes2 — Not Included Here

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

Code Also

Additional codes that may be required to fully describe the encounter.

  • Code also, if applicable, place of occurrence, such as:
  • highway rest stop (Y92.523)
  • school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-)
  • service areas as the place of occurrence of the external cause (Y92.52-)
  • single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-)
  • transport vehicle as the place of occurrence of the external cause (Y92.81-)

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code(s) to identify any associated complications of heatstroke, such as:
  • coma and stupor (R40.-)
  • rhabdomyolysis (M62.82)
  • systemic inflammatory response syndrome (R65.1-)

Change history

  • FY2020 — 2019-10-01
    Added to the code set
    Exertional heatstroke, initial encounter
    FY2020 changes

Verify Before Coding

  • Billable — reportable as written.
  • CC as a secondary diagnosis (FY2026). Can raise the stay's MS-DRG severity tier.

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

Referenced by Other Codes

Clinical classification (AHRQ CCSR):INJ021 — Effect of other external causes, initial 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)

CC — Complication or Comorbidity. Reported as a secondary diagnosis, this code raises the stay's MS-DRG severity tier — except when the principal diagnosis is one of 12 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 2 MS-DRGs: DRG 922 (MDC 21), DRG 923 (MDC 21).

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

Official ICD-10-CM tabular notes on other codes that name T67.02XA or its code family.

1 Excludes1 notes: R53.8 (via T67.-).

1 Code First instructions: R65.1 (via T67.0.-).

Frequently Asked Questions (FAQ) & Clinical Guidance

Does T67.02XA require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category T67.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to T67.02XA in its code family, with their registry titles.

  • T67.01 — Heatstroke and sunstroke
  • T67.01XA — Heatstroke and sunstroke, initial encounter
  • T67.01XD — Heatstroke and sunstroke, subsequent encounter
  • T67.01XS — Heatstroke and sunstroke, sequela
  • T67.02 — Exertional heatstroke
  • T67.02XD — Exertional heatstroke, subsequent encounter
  • T67.02XS — Exertional heatstroke, sequela
  • T67.09 — Other heatstroke and sunstroke
  • T67.09XA — Other heatstroke and sunstroke, initial encounter
  • T67.09XD — Other heatstroke and sunstroke, subsequent encounter

View all codes in the T67 family