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ICD-10-CM Current in FY 2027

T23.521A

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

Release
FY 2027
Effective
Official source (opens in a new tab)

Hierarchy

Where T23.521A sits in the official hierarchy. Each level is the code it is classified under.

  1. T23 Burn and corrosion of wrist and hand
  2. T23.5 Corrosion of first degree of wrist and hand
  3. T23.52 Corrosion of first degree of single finger (nail) except thumb
  4. T23.521 Parent Corrosion of first degree of single right finger (nail) except thumb
  5. T23.521A This code Corrosion of first degree of single right finger (nail) except thumb, initial encounter

Official Coding Notes

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 T23.5 — Corrosion of first degree of wrist and hand

Use Additional Code

external cause code to identify place ( Y92 )

Inherited from T23.5 — Corrosion of first 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

Version History

How T23.521A appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

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

  2. FY 2026 Effective

    Unchanged

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

Related Codes

Other codes under T23.521

Data Source

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

Release
FY 2027
Effective
Source file
icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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