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ICD-10/T67.01XD

T67.01XD ICD-10-CM Code: Heatstroke and sunstroke, 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

Heatstroke and sunstroke, subsequent encounter is a billable ICD-10-CM diagnosis code (T67.01D).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T67.01XD in the official ICD-10-CM tabular list.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Heat apoplexy
  • Heat pyrexia
  • Siriasis
  • Thermoplegia

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
    Heatstroke and sunstroke, subsequent encounter
    FY2020 changes

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.

Referenced by Other Codes

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.

Official ICD-10-CM tabular notes on other codes that name T67.01XD 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 T67.01XD 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 T67.01XD in its code family, with their registry titles.

  • T67 — Effects of heat and light
  • T67.0 — Heatstroke and sunstroke
  • T67.01 — Heatstroke and sunstroke
  • T67.01XA — Heatstroke and sunstroke, initial encounter
  • T67.01XS — Heatstroke and sunstroke, sequela
  • T67.02 — Exertional heatstroke
  • T67.02XA — Exertional heatstroke, initial encounter
  • T67.02XD — Exertional heatstroke, subsequent encounter
  • T67.02XS — Exertional heatstroke, sequela
  • T67.09 — Other heatstroke and sunstroke

View all codes in the T67 family