2026 ICD-10-CM Diagnosis Code T80.810SExtravasation of vesicant antineoplastic chemotherapy, sequela

ICD-10-CM Codes›S00–T88›T80-T88›T80

ICD-10-CM T80.810S
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

T80.810S is a billable ICD-10-CM diagnosis code for extravasation of vesicant antineoplastic chemotherapy, 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; and Conditions due to neoplasm or the treatment of neoplasm.

Code Identity

ICD-10-CM Code
T80.810S
Billable Status
Yes — Valid for Submission
Code Describes
Extravasation of vesicant antineoplastic chemotherapy, sequela
Short Description
Extravasation of vesicant antineopl chemotherapy, sequela
Parent Code
T80.810
Extravasation of vesicant antineoplastic chemotherapy

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionT80-T88Complications of surgical and medical care, not elsewhere classified
CategoryT80Complications following infusion, transfusion and therapeutic injection
This CodeT80.810SExtravasation of vesicant antineoplastic chemotherapy, sequela

Present on Admission (POA)Billing

T80.810S is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

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.

CCSR INJ076
Complication, sequela
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR NEO074
Conditions due to neoplasm or the treatment of neoplasm
Default principal diagnosis: inpatient No · outpatient No

Convert T80.810S to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
909.3 Late eff surg/med compl
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About T80.810SOverview

Is T80.810S (Extravasation of vesicant antineoplastic chemotherapy) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report extravasation of vesicant antineoplastic chemotherapy, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character S in T80.810S mean?

The final character S makes this a sequela code: it reports a lingering problem that remains after the extravasation of vesicant antineoplastic chemotherapy itself has resolved, not the original event.

What MS-DRG does T80.810S group to?

When extravasation of vesicant antineoplastic chemotherapy, 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 T80.810S 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 extravasation of vesicant antineoplastic chemotherapy, sequela on inpatient claims.

What is the ICD-9 equivalent of T80.810S?

Under the General Equivalence Mappings, extravasation of vesicant antineoplastic chemotherapy, 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] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.