ICDcodes.org
FY2027

T80.319A — ABO incompatibility with hemolytic transfusion reaction, unspecified, initial encounter

BillableUnspecifiedCC

Is T80.319A billable?

Yes, but T80.319A is an unspecified code. T80.319A is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T80.319A 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 T80.319A — the more specific alternatives are listed below.

T80.319A at a glance

CodeT80.319A
DescriptionABO incompatibility with hemolytic transfusion reaction, unspecified, initial encounter
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027
7th character "A"initial encounter

What does the 7th character "A" mean in T80.319A?

In T80.319A, the 7th character A means initial encounter. The 7th character is required for T80.319A to be a valid, complete code.

Same condition, different episode of care — switch the 7th character:

Which MS-DRGs does T80.319A group to?

T80.319A 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, T80.319A is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG. It also carries Hospital-Acquired Condition category 03.

How is T80.319A listed in the Alphabetic Index?

The Alphabetic Index lists these routes under T80.319, the nearest indexed parent of T80.319A. Use them to find the family, then select the specific code.

  • Complication › transfusion › incompatibility reaction › ABO › hemolytic transfusion reaction (s) (from) (of)

Inclusion terms

Alternative wording in documentation that is classified to T80.319A.

  • ABO incompatibility with hemolytic transfusion reaction at unspecified time after transfusion
  • Hemolytic transfusion reaction (HTR) due to ABO incompatibility NOS

Excludes1 — never code together — inherited from T80.3

The conditions below can never be reported together with T80.319A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • minor blood group antigens reactions (Duffy) (E) (K) (Kell) (Kidd) (Lewis) (M) (N) (P) (S) (T80.A-)

Use additional code — inherited from Chapter 19

Report an additional code alongside T80.319A to fully describe the condition. T80.319A 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 T80.319A to fully describe the condition. T80.319A is sequenced first.

  • 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)

Excludes2 — not included here — inherited from Chapter 19

The conditions below are not part of T80.319A, but a patient may have both at the same time. When documentation supports it, T80.319A and the excluded code may both be reported.

  • birth trauma (P10-P15)
  • obstetric trauma (O70-O71)

Excludes2 — not included here — inherited from T80-T88

The conditions below are not part of T80.319A, but a patient may have both at the same time. When documentation supports it, T80.319A 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 T80.319A, but a patient may have both at the same time. When documentation supports it, T80.319A 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 T80.319A existed?

T80.319A 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.