Is T80.919A a billable ICD-10-CM code?

Yes. T80.919A is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does T80.919A sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Complications of surgical and medical care, not elsewhere classified (T80-T88).

What cannot be coded together with T80.919A?

T80.919A carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above T80.919A (T80.91) and apply to it just the same.

T80.919A

T80.919A — Hemolytic transfusion reaction, unspecified incompatibility, unspecified as acute or delayed, initial encounter

Billable / specific codeICD-10-CM

T80.919A is a billable, specific ICD-10-CM code for hemolytic transfusion reaction, unspecified incompatibility, unspecified as acute or delayed, initial encounter. It is valid for submission on a claim.

7th character "A" — initial encounter

The appropriate 7th character is to be added to each code from category T80

A: initial encounter
D: subsequent encounter
S: sequela

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Hemolytic transfusion reaction NOS

Excludes1 inherited from the categories above T80.919A

These are not written on T80.919A, but they bind it: a note on a category applies to every code beneath it. Billing T80.919A with anything listed here is a denial.

Written on T80.91 — Hemolytic transfusion reaction, unspecified incompatibility

ABO incompatibility with hemolytic transfusion reaction (T80.31-)
Non-ABO incompatibility with hemolytic transfusion reaction (T80.A1-)
Rh incompatibility with hemolytic transfusion reaction (T80.41-)

Excludes2 inherited from the categories above T80.919A

Also inherited, and the opposite of Excludes1: these conditions are not part of T80.919A, but a patient can have both, so you may code both.

Written on T80 — Complications following infusion, transfusion and therapeutic injection

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)

Risk adjustment

T80.919A does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

T80.919A is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56612Billing and Coding: CT of the Head

Code history

T80.919A has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share T80.919. If T80.919A is not quite right, the correct code is usually one of these.

Questions about T80.919A

Is T80.919A a billable ICD-10-CM code?: Yes. T80.919A is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does T80.919A sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Complications of surgical and medical care, not elsewhere classified (T80-T88).
What cannot be coded together with T80.919A?: T80.919A carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above T80.919A (T80.91) and apply to it just the same.