Is T23.41 a billable code?
No. T23.41 is a header code that groups 9 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
T23.41: Corrosion of unspecified degree of thumb (nail)
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
T23.41 groups related diagnoses under corrosion of unspecified degree of thumb (nail). It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under T23.41
- T23.411ACorrosion of unspecified degree of right thumb (nail), initial encounter
- T23.411DCorrosion of unspecified degree of right thumb (nail), subsequent encounter
- T23.411SCorrosion of unspecified degree of right thumb (nail), sequela
- T23.412ACorrosion of unspecified degree of left thumb (nail), initial encounter
- T23.412DCorrosion of unspecified degree of left thumb (nail), subsequent encounter
- T23.412SCorrosion of unspecified degree of left thumb (nail), sequela
- T23.419ACorrosion of unspecified degree of unspecified thumb (nail), initial encounter
- T23.419DCorrosion of unspecified degree of unspecified thumb (nail), subsequent encounter
- T23.419SCorrosion of unspecified degree of unspecified thumb (nail), sequela
Other codes in T23.4 Corrosion of unspecified degree of wrist and hand
- T23.40Corrosion of unspecified degree of hand, unspecified siteheader
- T23.42Corrosion of unspecified degree of single finger (nail) except thumbheader
- T23.43Corrosion of unspecified degree of multiple fingers (nail), not including thumbheader
- T23.44Corrosion of unspecified degree of multiple fingers (nail), including thumbheader
- T23.45Corrosion of unspecified degree of palmheader
- T23.46Corrosion of unspecified degree of back of handheader
- T23.47Corrosion of unspecified degree of wristheader
- T23.49Corrosion of unspecified degree of multiple sites of wrist and handheader
T23.41 questions
What does T23.41 mean?
T23.41 is the ICD-10-CM code for Corrosion of unspecified degree of thumb (nail). It is in chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.