T73.1 vs Z58.6
T73.1 (Deprivation of water) compared with Z58.6 (Inadequate drinking-water supply), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. Z58.6 carries an Excludes2 note covering T73.1: “deprivation of water (T73.1)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| T73.1Deprivation of water | Z58.6Inadequate drinking-water supply | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) |
| Definition | Deprivation of water is a non-billable ICD-10-CM category code (T73.1). | Inadequate drinking-water supply is a billable ICD-10-CM diagnosis code (Z58.6). |
| 7th character | The appropriate 7th character is to be added to each code from category T73 | — |
| Includes | — | Lack of safe drinking water |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources