T67.02XD – Exertional heatstroke, subsequent encounter

ICD-10-CM 2027 diagnosis code · Other and unspecified effects of external causes

Billable code

ICD-10-CM code T67.02XD

Code: T67.02XD (claims format: T6702XD)
Description: Exertional heatstroke, subsequent encounter
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
Block: T66-T78 Other and unspecified effects of external causes
Parent codes: T67 › T67.0 › T67.02

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care.

Character	Meaning
`A`	initial encounter
`D`	subsequent encounter
`S`	sequela

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

T67 – Effects of heat and light

Excludes1 (not coded here):

erythema [dermatitis] ab igne (L59.0)
malignant hyperpyrexia due to anesthesia (T88.3)
radiation-related disorders of the skin and subcutaneous tissue (L55-L59)

Excludes2 (not included here):

burns (T20-T31)
sunburn (L55.-)
sweat disorder due to heat (L74-L75)

7th character note:

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

T67.0 – Heatstroke and sunstroke

Use additional code:

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

Block T66-T78

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-)

Related codes in T67.02

T67.02XA – Exertional heatstroke, initial encounterBillable
T67.02XS – Exertional heatstroke, sequelaBillable

Frequently asked questions

What is ICD-10 code T67.02XD?

T67.02XD is the ICD-10-CM code for exertional heatstroke, subsequent encounter, in the block T66-T78 (Other and unspecified effects of external causes).

Is T67.02XD a billable code?

Yes. T67.02XD is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does T67.02XD belong to?

It belongs to category T67 – Effects of heat and light.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.