ICD-10-CM 2027
ICD-10 code for lack of water
From the official ICD-10-CM alphabetic index entry “Water › lack of”. Page updated September 29, 2026.
About coding lack of water
The ICD-10-CM code for lack of water is T73.1 (Deprivation of water). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on T73.1.
Within T73 (effects of other deprivation), T73.1 is specifically for deprivation of water. Related codes cover Starvation (T73.0), exhaustion due to exposure (T73.2), exhaustion due to excessive exertion (T73.3), other effects of deprivation (T73.8) and effect of deprivation, unspecified (T73.9).
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 lack of water codes (official index)
- safe drinking Z58.6 — Inadequate drinking-water supply
Common questions about lack of water ICD-10 codes
What is the ICD-10 code for lack of water?
- T73.1 — Deprivation of water (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: Z58.6.
What is the ICD-10 code for safe drinking lack of water?
- Z58.6 — Inadequate drinking-water supply.
Is T73.1 billable?
- No. T73.1 is a header code. Report one of its more specific subcodes instead.