T73.1 – Deprivation of water

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

Non-billable header

ICD-10-CM code T73.1

Code: T73.1 (claims format: T731)
Description: Deprivation of water
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: T73

Billable codes under T73.1

T73.1 is a header code and cannot be used on claims. Choose the most specific code:

T73.1XXA – Deprivation of water, initial encounterBillable
T73.1XXD – Deprivation of water, subsequent encounterBillable
T73.1XXS – Deprivation of water, sequelaBillable

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.

T73 – Effects of other deprivation

7th character note:

The appropriate 7th character is to be added to each code from category T73

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-)

Index terms for T73.1

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in T73

T73.0 – StarvationHeader
T73.2 – Exhaustion due to exposureHeader
T73.3 – Exhaustion due to excessive exertionHeader
T73.8 – Other effects of deprivationHeader
T73.9 – Effect of deprivation, unspecifiedHeader

Frequently asked questions

What is ICD-10 code T73.1?

T73.1 is the ICD-10-CM code for deprivation of water, in the block T66-T78 (Other and unspecified effects of external causes).

Is T73.1 a billable code?

No. T73.1 is a header code with more specific child codes; report one of the billable codes listed above.

What category does T73.1 belong to?

It belongs to category T73 – Effects of other deprivation.

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.