T67.8 – Other effects of heat and light
ICD-10-CM 2027 diagnosis code · Other and unspecified effects of external causes
- Code
T67.8(claims format:T678)- Description
- Other effects of heat and light
- Billable
- No – use a more specific code below
- 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
Billable codes under T67.8
T67.8 is a header code and cannot be used on claims. Choose the most specific code:
7th character values
Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).
| 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
- The appropriate 7th character is to be added to each code from category T67
Block T66-T78
- , 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-)
Index terms for T67.8
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in T67
- T67.0 – Heatstroke and sunstrokeHeader
- T67.1 – Heat syncopeHeader
- T67.2 – Heat crampHeader
- T67.3 – Heat exhaustion, anhydroticHeader
- T67.4 – Heat exhaustion due to salt depletionHeader
- T67.5 – Heat exhaustion, unspecifiedHeader
- T67.6 – Heat fatigue, transientHeader
- T67.7 – Heat edemaHeader
- T67.9 – Effect of heat and light, unspecifiedHeader
Frequently asked questions
What is ICD-10 code T67.8?
T67.8 is the ICD-10-CM code for other effects of heat and light, in the block T66-T78 (Other and unspecified effects of external causes).
Is T67.8 a billable code?
No. T67.8 is a header code with more specific child codes; report one of the billable codes listed above.
What category does T67.8 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.