T75.1XXA (Unspecified effects of drowning and nonfatal submersion, initial encounter) compared with T75.1XXS (Unspecified effects of drowning and nonfatal submersion, sequela), from the official CMS tabular data. T75.1XXA and T75.1XXS code the same injury at a different phase of treatment.
Same underlying diagnosis, different encounter phase.
The 7th character records the phase of care for the encounter being coded, so a single encounter takes one of these characters, not several. Review whether both phases belong on the same episode of care.
Source: ICD-10-CM Official Guidelines, Section I.C.19.a
Same injury, other encounter phase. T75.1XXA and T75.1XXS code the same injury at a different phase of treatment, set by the 7th character.
The 7th character records the type of care given at the encounter being coded (ICD-10-CM Official Guidelines, Section I.C.19.a), so one encounter takes one of these, not both.
| T75.1XXAUnspecified effects of drowning and nonfatal submersion, initial encounter | T75.1XXSUnspecified effects of drowning and nonfatal submersion, sequela | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Unspecified effects of drowning and nonfatal submersion, initial encounter is a billable ICD-10-CM diagnosis code (T75.1A). | Unspecified effects of drowning and nonfatal submersion, sequela is a billable ICD-10-CM diagnosis code (T75.1S). |
| 7th character | The appropriate 7th character is to be added to each code from category T75 | The appropriate 7th character is to be added to each code from category T75 |
| Includes | Immersion | Immersion |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources