ICD-10-CM FY2027 diagnosis code

T23.531D: Corrosion of first degree of multiple right fingers (nail), not including thumb, subsequent encounter

Billable codeValid for dates of service October 1, 2026 to September 30, 2027

T23.531D is a billable ICD-10-CM diagnosis code for corrosion of first degree of multiple right fingers (nail), not including thumb, subsequent encounter. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.

T23.531D questions

Is T23.531D a billable code?

Yes. T23.531D is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.

What does T23.531D mean?

T23.531D is the ICD-10-CM code for Corrosion of first degree of multiple right fingers (nail), not including thumb, subsequent encounter. 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.