Is T23.4 a billable code?
No. T23.4 is a header code that groups 81 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
T23.4: Corrosion of unspecified degree of wrist and hand
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
T23.4 groups related diagnoses under corrosion of unspecified degree of wrist and hand. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under T23.4
- T23.401ACorrosion of unspecified degree of right hand, unspecified site, initial encounter
- T23.401DCorrosion of unspecified degree of right hand, unspecified site, subsequent encounter
- T23.401SCorrosion of unspecified degree of right hand, unspecified site, sequela
- T23.402ACorrosion of unspecified degree of left hand, unspecified site, initial encounter
- T23.402DCorrosion of unspecified degree of left hand, unspecified site, subsequent encounter
- T23.402SCorrosion of unspecified degree of left hand, unspecified site, sequela
- T23.409ACorrosion of unspecified degree of unspecified hand, unspecified site, initial encounter
- T23.409DCorrosion of unspecified degree of unspecified hand, unspecified site, subsequent encounter
- T23.409SCorrosion of unspecified degree of unspecified hand, unspecified site, sequela
- 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
- T23.421ACorrosion of unspecified degree of single right finger (nail) except thumb, initial encounter
- T23.421DCorrosion of unspecified degree of single right finger (nail) except thumb, subsequent encounter
- T23.421SCorrosion of unspecified degree of single right finger (nail) except thumb, sequela
- T23.422ACorrosion of unspecified degree of single left finger (nail) except thumb, initial encounter
- T23.422DCorrosion of unspecified degree of single left finger (nail) except thumb, subsequent encounter
- T23.422SCorrosion of unspecified degree of single left finger (nail) except thumb, sequela
- T23.429ACorrosion of unspecified degree of unspecified single finger (nail) except thumb, initial encounter
- T23.429DCorrosion of unspecified degree of unspecified single finger (nail) except thumb, subsequent encounter
- T23.429SCorrosion of unspecified degree of unspecified single finger (nail) except thumb, sequela
- T23.431ACorrosion of unspecified degree of multiple right fingers (nail), not including thumb, initial encounter
- T23.431DCorrosion of unspecified degree of multiple right fingers (nail), not including thumb, subsequent encounter
- T23.431SCorrosion of unspecified degree of multiple right fingers (nail), not including thumb, sequela
- T23.432ACorrosion of unspecified degree of multiple left fingers (nail), not including thumb, initial encounter
- T23.432DCorrosion of unspecified degree of multiple left fingers (nail), not including thumb, subsequent encounter
- T23.432SCorrosion of unspecified degree of multiple left fingers (nail), not including thumb, sequela
- T23.439ACorrosion of unspecified degree of unspecified multiple fingers (nail), not including thumb, initial encounter
- T23.439DCorrosion of unspecified degree of unspecified multiple fingers (nail), not including thumb, subsequent encounter
- T23.439SCorrosion of unspecified degree of unspecified multiple fingers (nail), not including thumb, sequela
- T23.441ACorrosion of unspecified degree of multiple right fingers (nail), including thumb, initial encounter
- T23.441DCorrosion of unspecified degree of multiple right fingers (nail), including thumb, subsequent encounter
- T23.441SCorrosion of unspecified degree of multiple right fingers (nail), including thumb, sequela
- T23.442ACorrosion of unspecified degree of multiple left fingers (nail), including thumb, initial encounter
- T23.442DCorrosion of unspecified degree of multiple left fingers (nail), including thumb, subsequent encounter
- T23.442SCorrosion of unspecified degree of multiple left fingers (nail), including thumb, sequela
- T23.449ACorrosion of unspecified degree of unspecified multiple fingers (nail), including thumb, initial encounter
- T23.449DCorrosion of unspecified degree of unspecified multiple fingers (nail), including thumb, subsequent encounter
- T23.449SCorrosion of unspecified degree of unspecified multiple fingers (nail), including thumb, sequela
- T23.451ACorrosion of unspecified degree of right palm, initial encounter
- T23.451DCorrosion of unspecified degree of right palm, subsequent encounter
- T23.451SCorrosion of unspecified degree of right palm, sequela
- T23.452ACorrosion of unspecified degree of left palm, initial encounter
- T23.452DCorrosion of unspecified degree of left palm, subsequent encounter
- T23.452SCorrosion of unspecified degree of left palm, sequela
- T23.459ACorrosion of unspecified degree of unspecified palm, initial encounter
- T23.459DCorrosion of unspecified degree of unspecified palm, subsequent encounter
- T23.459SCorrosion of unspecified degree of unspecified palm, sequela
- T23.461ACorrosion of unspecified degree of back of right hand, initial encounter
- T23.461DCorrosion of unspecified degree of back of right hand, subsequent encounter
- T23.461SCorrosion of unspecified degree of back of right hand, sequela
- T23.462ACorrosion of unspecified degree of back of left hand, initial encounter
- T23.462DCorrosion of unspecified degree of back of left hand, subsequent encounter
- T23.462SCorrosion of unspecified degree of back of left hand, sequela
- T23.469ACorrosion of unspecified degree of back of unspecified hand, initial encounter
- T23.469DCorrosion of unspecified degree of back of unspecified hand, subsequent encounter
- T23.469SCorrosion of unspecified degree of back of unspecified hand, sequela
- T23.471ACorrosion of unspecified degree of right wrist, initial encounter
- T23.471DCorrosion of unspecified degree of right wrist, subsequent encounter
- T23.471SCorrosion of unspecified degree of right wrist, sequela
- T23.472ACorrosion of unspecified degree of left wrist, initial encounter
- T23.472DCorrosion of unspecified degree of left wrist, subsequent encounter
- T23.472SCorrosion of unspecified degree of left wrist, sequela
- T23.479ACorrosion of unspecified degree of unspecified wrist, initial encounter
- T23.479DCorrosion of unspecified degree of unspecified wrist, subsequent encounter
- T23.479SCorrosion of unspecified degree of unspecified wrist, sequela
- T23.491ACorrosion of unspecified degree of multiple sites of right wrist and hand, initial encounter
- T23.491DCorrosion of unspecified degree of multiple sites of right wrist and hand, subsequent encounter
- T23.491SCorrosion of unspecified degree of multiple sites of right wrist and hand, sequela
- T23.492ACorrosion of unspecified degree of multiple sites of left wrist and hand, initial encounter
- T23.492DCorrosion of unspecified degree of multiple sites of left wrist and hand, subsequent encounter
- T23.492SCorrosion of unspecified degree of multiple sites of left wrist and hand, sequela
- T23.499ACorrosion of unspecified degree of multiple sites of unspecified wrist and hand, initial encounter
- T23.499DCorrosion of unspecified degree of multiple sites of unspecified wrist and hand, subsequent encounter
- T23.499SCorrosion of unspecified degree of multiple sites of unspecified wrist and hand, sequela
Other codes in T23 Burn and corrosion of wrist and hand
- T23.0Burn of unspecified degree of wrist and handheader
- T23.1Burn of first degree of wrist and handheader
- T23.2Burn of second degree of wrist and handheader
- T23.3Burn of third degree of wrist and handheader
- T23.5Corrosion of first degree of wrist and handheader
- T23.6Corrosion of second degree of wrist and handheader
- T23.7Corrosion of third degree of wrist and handheader
T23.4 questions
What does T23.4 mean?
T23.4 is the ICD-10-CM code for Corrosion of unspecified degree of wrist and hand. 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.