ICD-10-CM diagnosis code
T23.751S Corrosion of third degree of right palm, 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 T23
648 complete codes in this category.
- T23.742SCorrosion of third degree of multiple left fingers (nail), including thumb, sequela
- T23.749ACorrosion of third degree of unspecified multiple fingers (nail), including thumb, initial encounter
- T23.749DCorrosion of third degree of unspecified multiple fingers (nail), including thumb, subsequent encounter
- T23.749SCorrosion of third degree of unspecified multiple fingers (nail), including thumb, sequela
- T23.751ACorrosion of third degree of right palm, initial encounter
- T23.751DCorrosion of third degree of right palm, subsequent encounter
- T23.751SCorrosion of third degree of right palm, sequela
- T23.752ACorrosion of third degree of left palm, initial encounter
- T23.752DCorrosion of third degree of left palm, subsequent encounter
- T23.752SCorrosion of third degree of left palm, sequela
- T23.759ACorrosion of third degree of unspecified palm, initial encounter
- T23.759DCorrosion of third degree of unspecified palm, subsequent encounter
Documentation tips
- Make sure the note supports every element of the title, “Corrosion of third degree of right palm, 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 T23.
The international WHO ICD-10 also has T23, 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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