2024 ICD-10-CM Diagnosis Code T80.91

Hemolytic transfusion reaction, unspecified incompatibility

ICD-10-CM Code:
T80.91
ICD-10 Code for:
Hemolytic transfusion reaction, unspecified incompatibility
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Complications of surgical and medical care, not elsewhere classified
      (T80-T88)
      • Complications following infusion, transfusion and therapeutic injection
        (T80)

T80.91 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of hemolytic transfusion reaction, unspecified incompatibility. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Unspecified diagnosis codes like T80.91 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Specific Coding Applicable to Hemolytic transfusion reaction, unspecified incompatibility

Non-specific codes like T80.91 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for hemolytic transfusion reaction, unspecified incompatibility:

  • T80.910 for Acute hemolytic transfusion reaction, unspecified incompatibility - NON-BILLABLE CODE

  • Use T80.910A for initial encounter - BILLABLE CODE

  • Use T80.910D for subsequent encounter - BILLABLE CODE

  • Use T80.910S for sequela - BILLABLE CODE

  • T80.911 for Delayed hemolytic transfusion reaction, unspecified incompatibility - NON-BILLABLE CODE

  • Use T80.911A for initial encounter - BILLABLE CODE

  • Use T80.911D for subsequent encounter - BILLABLE CODE

  • Use T80.911S for sequela - BILLABLE CODE

  • T80.919 for Hemolytic transfusion reaction, unspecified incompatibility, unspecified as acute or delayed - NON-BILLABLE CODE

  • Use T80.919A for initial encounter - BILLABLE CODE

  • Use T80.919D for subsequent encounter - BILLABLE CODE

  • Use T80.919S for sequela - BILLABLE CODE

Coding Guidelines

The appropriate 7th character is to be added to each code from block Complications following infusion, transfusion and therapeutic injection (T80). Use the following options for the aplicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • 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

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.