2026 ICD-10-CM Diagnosis Code T80.29XAInfection following other infusion, transfusion and therapeutic injection, initial encounter
T80.29XA is a billable ICD-10-CM diagnosis code for infection following other infusion, transfusion and therapeutic injection, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 856 through 858, 867 through 869. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication of other surgical or medical care, injury, initial encounter.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Infection after infusion
- Infection after injection
- Infection after transfusion
- Infection due to and following peritoneal dialysis
- Injection site abscess
- Injection site infection
- Injection site sterile abscess
- Post procedure puncture site infection
- Postoperative sepsis
- Posttransfusion viral hepatitis
- Sepsis following infusion, injection, transfusion AND/OR vaccination
- Septicemia associated with vascular access catheter
- Transfusion-transmitted infectious disease
Coding GuidelinesGuidance
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 applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Convert T80.29XA to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About T80.29XAOverview
Is T80.29XA a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report infection following other infusion, transfusion and therapeutic injection, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character A in T80.29XA mean?
The final character A marks the initial encounter: use it while the patient is receiving active treatment for infection following other infusion, transfusion and therapeutic injection, such as an emergency visit or first evaluation.
What MS-DRG does T80.29XA group to?
When infection following other infusion, transfusion and therapeutic injection, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 856, 857, 858, 867, 868, 869, with relative weights from 0.7297 to 4.5487 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of T80.29XA?
Under the General Equivalence Mappings, infection following other infusion, transfusion and therapeutic injection, initial encounter converts to ICD-9-CM 999.39 (infect fol infus/inj/vac). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
