All ICD10 Codes

T20.5

Non-Billable
ChapterS00–T88
Ranksubcategory
Official Description

Corrosion of first degree of head, face, and neck

Use a more specific code (8 billable, 1 non-billable)
T20.50Corrosion of first degree of head, face, and neck, unspecified siteT20.51Corrosion of first degree of ear [any part, except ear drum]has subcodesT20.52Corrosion of first degree of lip(s)T20.53Corrosion of first degree of chinT20.54Corrosion of first degree of nose (septum)T20.55Corrosion of first degree of scalp [any part]T20.56Corrosion of first degree of forehead and cheekT20.57Corrosion of first degree of neckT20.59Corrosion of first degree of multiple sites of head, face, and neck
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).

Instructional Notes

Code First
  • (T51-T65) to identify chemical and intent
Use Additional Code
  • external cause code to identify place (Y92)
General instructions are available for the parent sections:
View CH19 NotesView T20-T25 NotesView T20 Notes

Clinical Hierarchy

BillableHas subcodes
CH19Injury, poisoning and certain other consequences of external causes (S00-T88)
T20-T25Burns and corrosions of external body surface, specified by site (T20-T25)
T20Burn and corrosion of head, face, and neck
T20.5Corrosion of first degree of head, face, and neckNot billable
T20.50Corrosion of first degree of head, face, and neck, unspecified siteBillable
T20.51Corrosion of first degree of ear [any part, except ear drum]Subcodes
T20.52Corrosion of first degree of lip(s)Billable
T20.53Corrosion of first degree of chinBillable
T20.54Corrosion of first degree of nose (septum)Billable
T20.55Corrosion of first degree of scalp [any part]Billable
T20.56Corrosion of first degree of forehead and cheekBillable
T20.57Corrosion of first degree of neckBillable
T20.59Corrosion of first degree of multiple sites of head, face, and neckBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to T20.5:

categoryT20
Burn and corrosion of head, face, and neck
View context instructions
blockT20-T25
Burns and corrosions of external body surface, specified by site (T20-T25)
View context instructions
chapterCH19
Injury, poisoning and certain other consequences of external causes (S00-T88)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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