All ICD10 Codes

T23.4

Non-Billable
ChapterS00–T88
Ranksubcategory
Official Description

Corrosion of unspecified degree of wrist and hand

Use a more specific code (0 billable, 9 non-billable)
T23.40Corrosion of unspecified degree of hand, unspecified sitehas subcodesT23.41Corrosion of unspecified degree of thumb (nail)has subcodesT23.42Corrosion of unspecified degree of single finger (nail) except thumbhas subcodesT23.43Corrosion of unspecified degree of multiple fingers (nail), not including thumbhas subcodesT23.44Corrosion of unspecified degree of multiple fingers (nail), including thumbhas subcodesT23.45Corrosion of unspecified degree of palmhas subcodesT23.46Corrosion of unspecified degree of back of handhas subcodesT23.47Corrosion of unspecified degree of wristhas subcodesT23.49Corrosion of unspecified degree of multiple sites of wrist and handhas subcodes
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 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)
T23Burn and corrosion of wrist and hand
T23.4Corrosion of unspecified degree of wrist and handNot billable
T23.40Corrosion of unspecified degree of hand, unspecified siteSubcodes
T23.41Corrosion of unspecified degree of thumb (nail)Subcodes
T23.42Corrosion of unspecified degree of single finger (nail) except thumbSubcodes
T23.43Corrosion of unspecified degree of multiple fingers (nail), not including thumbSubcodes
T23.44Corrosion of unspecified degree of multiple fingers (nail), including thumbSubcodes
T23.45Corrosion of unspecified degree of palmSubcodes
T23.46Corrosion of unspecified degree of back of handSubcodes
T23.47Corrosion of unspecified degree of wristSubcodes
T23.49Corrosion of unspecified degree of multiple sites of wrist and handSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to T23.4:

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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