T80.911A — Delayed hemolytic transfusion reaction, unspecified incompatibility, initial encounter
Is T80.911A billable?
Yes, but T80.911A is an unspecified code. T80.911A is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T80.911A is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting T80.911A — the more specific alternatives are listed below.
More specific alternatives
- T80.0XXAAir embolism following infusion, transfusion and therapeutic injection, initial encounter
- T80.1XXAVascular complications following infusion, transfusion and therapeutic injection, initial encounter
- T80.22XAAcute infection following transfusion, infusion, or injection of blood and blood products, initial encounter
- T80.30XAABO incompatibility reaction due to transfusion of blood or blood products, unspecified, initial encounter
- T80.40XARh incompatibility reaction due to transfusion of blood or blood products, unspecified, initial encounter
- T80.A0XANon-ABO incompatibility reaction due to transfusion of blood or blood products, unspecified, initial encounter
- T80.51XAAnaphylactic reaction due to administration of blood and blood products, initial encounter
- T80.61XAOther serum reaction due to administration of blood and blood products, initial encounter
- T80.82XAComplication of immune effector cellular therapy, initial encounter
T80.911A at a glance
| Code | T80.911A |
|---|---|
| Description | Delayed hemolytic transfusion reaction, unspecified incompatibility, initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in T80.911A?
In T80.911A, the 7th character A means initial encounter. The 7th character is required for T80.911A to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T80.911A group to?
T80.911A sits in MDC 15 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 791Prematurity with Major Problemsmedical
As a secondary diagnosis, T80.911A is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is T80.911A listed in the Alphabetic Index?
The Alphabetic Index lists these routes under T80.911, the nearest indexed parent of T80.911A. Use them to find the family, then select the specific code.
- Complication › transfusion › incompatibility reaction › delayed (s) (from) (of)
Excludes1 — never code together — inherited from T80.91
The conditions below can never be reported together with T80.911A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from Chapter 19
Report an additional code alongside T80.911A to fully describe the condition. T80.911A is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T80-T88
Report an additional code alongside T80.911A to fully describe the condition. T80.911A is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T80.911A, but a patient may have both at the same time. When documentation supports it, T80.911A and the excluded code may both be reported.
Excludes2 — not included here — inherited from T80-T88
The conditions below are not part of T80.911A, but a patient may have both at the same time. When documentation supports it, T80.911A and the excluded code may both be reported.
- any encounters with medical care for postprocedural conditions in which no complications are present, such as:
- artificial opening status (Z93.-)
- closure of external stoma (Z43.-)
- fitting and adjustment of external prosthetic device (Z44.-)
- burns and corrosions from local applications and irradiation (T20-T32)
- complications of surgical procedures during pregnancy, childbirth and the puerperium (O00-O9A)
- mechanical complication of respirator [ventilator] (J95.850)
- poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4 or 6)
- postprocedural fever (R50.82)
- specified complications classified elsewhere, such as:
- cerebrospinal fluid leak from spinal puncture (G97.0)
- colostomy malfunction (K94.0-)
- disorders of fluid and electrolyte imbalance (E86-E87)
- functional disturbances following cardiac surgery (I97.0-I97.1)
- intraoperative and postprocedural complications of specified body systems (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95.6-, J95.7, K91.6-, L76.-, M96.-, N99.-)
- ostomy complications (J95.0-, K94.-, N99.5-)
- postgastric surgery syndromes (K91.1)
- postlaminectomy syndrome NEC (M96.1)
- postmastectomy lymphedema syndrome (I97.2)
- postsurgical blind-loop syndrome (K91.2)
- ventilator associated pneumonia (J95.851)
Excludes2 — not included here — inherited from T80
The conditions below are not part of T80.911A, but a patient may have both at the same time. When documentation supports it, T80.911A and the excluded code may both be reported.
- bone marrow transplant rejection (T86.01)
- febrile nonhemolytic transfusion reaction (R50.84)
- fluid overload due to transfusion (E87.71)
- posttransfusion purpura (D69.51)
- transfusion associated circulatory overload (TACO) (E87.71)
- transfusion (red blood cell) associated hemochromatosis (E83.111)
- transfusion related acute lung injury (TRALI) (J95.84)
How long has T80.911A existed?
T80.911A has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.