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ICD-10-CM 2027 diagnosis code

S63.401Traumatic rupture of unspecified ligament of left index finger at metacarpophalangeal and interphalangeal joint

Not billable — use a more specific codeRequires 7th character

S63.401 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.Short description: Traum rupture of unsp ligament of l idx fngr at MCP/IP jt

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About S63.401

S63.401 is the ICD-10-CM diagnosis code for traumatic rupture of unspecified ligament of left index finger at metacarpophalangeal and interphalangeal joint. It belongs to category S63 (dislocation and sprain of joints and ligaments at wrist and hand level), block S60-S69 (injuries to the wrist, hand and fingers) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within S63.40 (traumatic rupture of unspecified ligament of finger at metacarpophalangeal and interphalangeal joint), S63.401 is specifically for traumatic rupture of unspecified ligament of left index finger at metacarpophalangeal and interphalangeal joint. Related codes cover right index finger at metacarpophalangeal and interphalangeal joint (S63.400), right middle finger at metacarpophalangeal and interphalangeal joint (S63.402), left middle finger at metacarpophalangeal and interphalangeal joint (S63.403), right ring finger at metacarpophalangeal and interphalangeal joint (S63.404), left ring finger at metacarpophalangeal and interphalangeal joint (S63.405), right little finger at metacarpophalangeal and interphalangeal joint (S63.406), left little finger at metacarpophalangeal and interphalangeal joint (S63.407), other finger at metacarpophalangeal and interphalangeal joint (S63.408) and 1 more.

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. 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.

7th character

The appropriate 7th character is to be added to each code from category S63

Notes that apply from higher levels

Instructions written at a parent level also apply to S63.401.

› From S63 Dislocation and sprain of joints and ligaments at wrist and hand level
Includes
  • avulsion of joint or ligament at wrist and hand level
  • laceration of cartilage, joint or ligament at wrist and hand level
  • sprain of cartilage, joint or ligament at wrist and hand level
  • traumatic hemarthrosis of joint or ligament at wrist and hand level
  • traumatic rupture of joint or ligament at wrist and hand level
  • traumatic subluxation of joint or ligament at wrist and hand level
  • traumatic tear of joint or ligament at wrist and hand level
Excludes2
  • strain of muscle, fascia and tendon of wrist and hand (S66.-)
Code also
  • any associated open wound

Broader instructions also apply from S60-S69 Injuries to the wrist, hand and fingers and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about S63.401

Is S63.401 billable?

No. S63.401 is a header code. Report one of its more specific subcodes instead.