T80.410A (Rh incompatibility with acute hemolytic transfusion reaction, initial encounter) compared with T80.410S (Rh incompatibility with acute hemolytic transfusion reaction, sequela), from the official CMS tabular data. T80.410A and T80.410S code the same injury at a different phase of treatment. MedCoder-derived
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. T80.410A and T80.410S 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.
| T80.410ARh incompatibility with acute hemolytic transfusion reaction, initial encounter | T80.410SRh incompatibility with acute hemolytic transfusion reaction, sequela | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | S00-T88 — Injury, poisoning and certain other consequences of external causes | S00-T88 — Injury, poisoning and certain other consequences of external causes |
| Definition | Rh incompatibility with acute hemolytic transfusion reaction, initial encounter is a billable ICD-10-CM diagnosis code (T80.410A). | Rh incompatibility with acute hemolytic transfusion reaction, sequela is a billable ICD-10-CM diagnosis code (T80.410S). |
| 7th character | The appropriate 7th character is to be added to each code from category T80 | The appropriate 7th character is to be added to each code from category T80 |
| Includes | complications following perfusion Acute hemolytic transfusion reaction (AHTR) due to Rh incompatibility Rh incompatibility with hemolytic transfusion reaction less than 24 hours after transfusion | complications following perfusion Acute hemolytic transfusion reaction (AHTR) due to Rh incompatibility Rh incompatibility with hemolytic transfusion reaction less than 24 hours after transfusion |
| Use additional code | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) code(s) to identify the specified condition resulting from the complication code to identify devices involved and details of circumstances (Y62-Y82) | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) code(s) to identify the specified condition resulting from the complication code to identify devices involved and details of circumstances (Y62-Y82) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources