ICD-10-CM 2027
ICD-10 code for thumb fracture
From the official ICD-10-CM alphabetic index entry “Fracture, traumatic (abduction) (adduction) (separation) › thumb”. Page updated September 29, 2026.
About coding thumb fracture
The ICD-10-CM code for thumb fracture is S62.50 (Fracture of unspecified phalanx of thumb). The official index lists 4 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on S62.50.
Within S62.5, choose S62.50 (unspecified phalanx of thumb) only when documentation doesn't support a more specific option: proximal phalanx of thumb (S62.51) and distal phalanx of thumb (S62.52).
Codes in this range require a 7th character: A for initial encounter for closed fracture, B for initial encounter for open fracture, D for subsequent encounter for fracture with routine healing, G for subsequent encounter for fracture with delayed healing, K for subsequent encounter for fracture with nonunion, P for subsequent encounter for fracture with malunion and 1 more. Use placeholder "X" characters to fill any empty positions before the 7th character.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
More specific thumb fracture codes (official index)
Common questions about thumb fracture ICD-10 codes
What is the ICD-10 code for thumb fracture?
- S62.50 — Fracture of unspecified phalanx of thumb (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: S62.52, S62.52, S62.51, S62.51.
What is the ICD-10 code for distal phalanx thumb fracture?
- S62.52 — Fracture of distal phalanx of thumb (header code; choose a more specific subcode).
What is the ICD-10 code for proximal phalanx thumb fracture?
- S62.51 — Fracture of proximal phalanx of thumb (header code; choose a more specific subcode).
Is S62.50 billable?
- No. S62.50 is a header code. Report one of its more specific subcodes instead.