ICD-10-CM 2027
ICD-10 code for Overexposure
From the official ICD-10-CM alphabetic index entry “Overexposure (effects)”. Page updated September 29, 2026.
About coding Overexposure
The ICD-10-CM code for Overexposure is T73.9 (Effect of deprivation, unspecified). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on T73.9.
Within T73, choose T73.9 (Effect of deprivation, unspecified) only when documentation doesn't support a more specific option: Starvation (T73.0), deprivation of water (T73.1), exhaustion due to exposure (T73.2), exhaustion due to excessive exertion (T73.3) and other effects of deprivation (T73.8).
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
More specific Overexposure codes (official index)
- exhaustion T73.2 — Exhaustion due to exposure
Common questions about Overexposure ICD-10 codes
What is the ICD-10 code for Overexposure?
- T73.9 — Effect of deprivation, unspecified (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: T73.2.
What is the ICD-10 code for exhaustion overexposure?
- T73.2 — Exhaustion due to exposure (header code; choose a more specific subcode).
Is T73.9 billable?
- No. T73.9 is a header code. Report one of its more specific subcodes instead.