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U.S. ICD-10-CM · FY 2027

T23.721S ICD-10-CM Code: Corrosion of third degree of single right finger (nail) except thumb, sequela

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

T23.721S

Corrosion of third degree of single right finger (nail) except thumb, sequela

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where T23.721S sits

  1. 1

    Chapter 19

    Injury, poisoning and certain other consequences of external causes (S00-T88)

  2. 2

    Section

    Burns and corrosions of external body surface, specified by site (T20-T25)

  3. 3

    Category T23

    Burn and corrosion of wrist and hand

  4. 4

    Subcategory T23.721

    Corrosion of third degree of single right finger (nail) except thumb

  5. 5

    Code T23.721S

    Corrosion of third degree of single right finger (nail) except thumb, sequela

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for T23.721S.

Code first

No “code first” instruction is listed for T23.721S.

Use additional code

No “use additional code” instruction is listed for T23.721S.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for T23.721S.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for T23.721S.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code T23.721S mean?

T23.721S is the FY 2027 U.S. ICD-10-CM code for “Corrosion of third degree of single right finger (nail) except thumb, sequela.”

Is T23.721S a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, T23.721S has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is T23.721S located in ICD-10-CM?

T23.721S is listed in Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88), within Burns and corrosions of external body surface, specified by site (T20-T25) (T20–T25), under category T23, Burn and corrosion of wrist and hand and subcategory T23.721, Corrosion of third degree of single right finger (nail) except thumb.

What coding notes are listed for T23.721S?

No inclusion terms are listed for T23.721S in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

Keep exploring

Related T23.721 codes

T23.721A

Corrosion of third degree of single right finger (nail) except thumb, initial encounter

T23.721D

Corrosion of third degree of single right finger (nail) except thumb, subsequent encounter

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