ICD-10-CM 2027
ICD-10 code for Dorsum of hand corrosion
Corrosion of unspecified degree of back of unspecified hand
From the official ICD-10-CM alphabetic index entry “Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal) › dorsum of hand”. Page updated September 29, 2026.
About coding Dorsum of hand corrosion
The ICD-10-CM code for Dorsum of hand corrosion is T23.469 (Corrosion of unspecified degree of back of unspecified hand). The official index lists 11 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on T23.469.
Within T23.46, choose T23.469 (unspecified hand) only when documentation doesn't support a more specific option: right hand (T23.461) and left hand (T23.462).
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
More specific Dorsum of hand corrosion codes (official index)
- first degree T23.569 — Corrosion of first degree of back of unspecified hand
- left T23.462 — Corrosion of unspecified degree of back of left hand
- first degree T23.562 — Corrosion of first degree of back of left hand
- second degree T23.662 — Corrosion of second degree back of left hand
- third degree T23.762 — Corrosion of third degree of back of left hand
- right T23.461 — Corrosion of unspecified degree of back of right hand
- first degree T23.561 — Corrosion of first degree of back of right hand
- second degree T23.661 — Corrosion of second degree back of right hand
- third degree T23.761 — Corrosion of third degree of back of right hand
- second degree T23.669 — Corrosion of second degree back of unspecified hand
- third degree T23.769 — Corrosion of third degree back of unspecified hand
Common questions about Dorsum of hand corrosion ICD-10 codes
What is the ICD-10 code for Dorsum of hand corrosion?
- T23.469 — Corrosion of unspecified degree of back of unspecified hand (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: T23.569, T23.462, T23.562, T23.662 and others below.
What is the ICD-10 code for first degree dorsum of hand corrosion?
- T23.569 — Corrosion of first degree of back of unspecified hand (header code; choose a more specific subcode).
What is the ICD-10 code for left dorsum of hand corrosion?
- T23.462 — Corrosion of unspecified degree of back of left hand (header code; choose a more specific subcode).
What is the ICD-10 code for right dorsum of hand corrosion?
- T23.461 — Corrosion of unspecified degree of back of right hand (header code; choose a more specific subcode).
What is the ICD-10 code for second degree dorsum of hand corrosion?
- T23.669 — Corrosion of second degree back of unspecified hand (header code; choose a more specific subcode).
What is the ICD-10 code for third degree dorsum of hand corrosion?
- T23.769 — Corrosion of third degree back of unspecified hand (header code; choose a more specific subcode).
Is T23.469 billable?
- No. T23.469 is a header code. Report one of its more specific subcodes instead.