2026 ICD-10-CM Diagnosis Code T80.90XSUnspecified complication following infusion and therapeutic injection, sequela
T80.90XS is a billable ICD-10-CM diagnosis code for unspecified complication following infusion and therapeutic injection, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 922 through 923. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
T80.90XS is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acute disorder of hemodialysis
- Complication of dialysis
- Complication of extracorporeal circulation
- Complication of hemodialysis
- Complication of infusion
- Complication of injection
- Complication of perfusion
- Complication of renal dialysis
- Diabetic monitoring - injection sites
- Diabetic monitoring - injection sites abnormal
- Injection site disorder
- Long-term disorder of dialysis
- Loss of ultrafiltration
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 T80.90XS to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About T80.90XSOverview
Is T80.90XS a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report unspecified complication following infusion and therapeutic injection, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in T80.90XS mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the unspecified complication following infusion and therapeutic injection itself has resolved, not the original event.
What MS-DRG does T80.90XS group to?
When unspecified complication following infusion and therapeutic injection, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 922, 923, with relative weights from 1.0177 to 1.7494 depending on complications. Higher weights mean higher Medicare reimbursement.
Is T80.90XS exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for unspecified complication following infusion and therapeutic injection, sequela on inpatient claims.
What is the ICD-9 equivalent of T80.90XS?
Under the General Equivalence Mappings, unspecified complication following infusion and therapeutic injection, sequela converts to ICD-9-CM 909.3 (late eff surg/med compl). 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.
