ICD-10-CM diagnosis code
T80.818S Extravasation of other vesicant agent, sequela
- Billable
- Yes, a complete code (FY2026)
Encounter (7th character)
This code is for a sequela: a complication or condition that arises as a direct result of the injury. The sequela itself is usually coded first, followed by this code.
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Other codes in T80
114 complete codes in this category.
- T80.69XSOther serum reaction due to other serum, sequela
- T80.810AExtravasation of vesicant antineoplastic chemotherapy, initial encounter
- T80.810DExtravasation of vesicant antineoplastic chemotherapy, subsequent encounter
- T80.810SExtravasation of vesicant antineoplastic chemotherapy, sequela
- T80.818AExtravasation of other vesicant agent, initial encounter
- T80.818DExtravasation of other vesicant agent, subsequent encounter
- T80.818SExtravasation of other vesicant agent, sequela
- T80.82XAComplication of immune effector cellular therapy, initial encounter
- T80.82XDComplication of immune effector cellular therapy, subsequent encounter
- T80.82XSComplication of immune effector cellular therapy, sequela
- T80.89XAOther complications following infusion, transfusion and therapeutic injection, initial encounter
- T80.89XDOther complications following infusion, transfusion and therapeutic injection, subsequent encounter
Documentation tips
- Make sure the note supports every element of the title, “Extravasation of other vesicant agent, sequela”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to T80.
The international WHO ICD-10 also has T80, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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