ICD-10-CM Current in FY 2027

T23.409

Corrosion of unspecified degree of unspecified hand, unspecified site

Hierarchy

Where T23.409 sits in the official hierarchy. Each level is the code it is classified under.

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Code First

(T51-T65) to identify chemical and intent

Inherited from T23.4 — Corrosion of unspecified degree of wrist and hand

Use Additional Code

external cause code to identify place ( Y92 )

Inherited from T23.4 — Corrosion of unspecified degree of wrist and hand

7th Character

The appropriate 7th character is to be added to each code from category T23

Inherited from T23 — Burn and corrosion of wrist and hand

7th Character

A - initial encounter

Inherited from T23 — Burn and corrosion of wrist and hand

7th Character

D - subsequent encounter

Inherited from T23 — Burn and corrosion of wrist and hand

7th Character

S - sequela

Inherited from T23 — Burn and corrosion of wrist and hand

3 codes under T23.409

How T23.409 appears in each release imported from the official files, newest first.

FY 2027 Effective October 1, 2026
Current

Corrosion of unspecified degree of unspecified hand, unspecified site
FY 2026 Effective October 1, 2025
Unchanged

Corrosion of unspecified degree of unspecified hand, unspecified site

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

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