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ICD-10-CM Current in FY 2027

T20.40

Corrosion of unspecified degree of head, face, and neck, unspecified site

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

Hierarchy

Where T20.40 sits in the official hierarchy. Each level is the code it is classified under.

  1. T20 Burn and corrosion of head, face, and neck
  2. T20.4 Parent Corrosion of unspecified degree of head, face, and neck
  3. T20.40 This code Corrosion of unspecified degree of head, face, and neck, unspecified site

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.

Excludes2

burn and corrosion of ear drum ( T28.41 , T28.91 )

Inherited from T20 — Burn and corrosion of head, face, and neck

Excludes2

burn and corrosion of eye and adnexa ( T26 .-)

Inherited from T20 — Burn and corrosion of head, face, and neck

Excludes2

burn and corrosion of mouth and pharynx ( T28.0 )

Inherited from T20 — Burn and corrosion of head, face, and neck

Code First

(T51-T65) to identify chemical and intent

Inherited from T20.4 — Corrosion of unspecified degree of head, face, and neck

Use Additional Code

external cause code to identify place ( Y92 )

Inherited from T20.4 — Corrosion of unspecified degree of head, face, and neck

7th Character

The appropriate 7th character is to be added to each code from category T20

Inherited from T20 — Burn and corrosion of head, face, and neck

7th Character

A - initial encounter

Inherited from T20 — Burn and corrosion of head, face, and neck

7th Character

D - subsequent encounter

Inherited from T20 — Burn and corrosion of head, face, and neck

7th Character

S - sequela

Inherited from T20 — Burn and corrosion of head, face, and neck

More Specific Codes

3 codes under T20.40

Version History

How T20.40 appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

    Corrosion of unspecified degree of head, face, and neck, unspecified site

  2. FY 2026 Effective

    Unchanged

    Corrosion of unspecified degree of head, face, and neck, unspecified site

Related Codes

Other codes under T20.4

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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