S63.221A is the authoritative medical code for Subluxation of unspecified interphalangeal joint of left index finger, initial encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for subluxation of unspecified interphalangeal joint of left index finger, initial encounter (ICD-10-CM S63.221A), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Subluxation of unspecified interphalangeal joint of left index finger, initial encounter is a billable ICD-10-CM diagnosis code S63.221A. 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 (not included here): subluxation and dislocation of thumb S63.1-; strain of muscle, fascia and tendon of wrist and hand S66.-; burns and corrosions T20-T32; frostbite T33-T34; insect bite or sting, venomous T63.4. Code also: any associated open wound. 7th character: The appropriate 7th character is to be added to each code from category S63.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for S63.221A in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- 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 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- subluxation and dislocation of thumb S63.1-
- strain of muscle, fascia and tendon of wrist and hand S66.-
- burns and corrosions T20-T32
- frostbite T33-T34
- insect bite or sting, venomous T63.4
Code Also
Additional codes that may be required to fully describe the encounter.
- any associated open wound
Frequently Asked Questions (FAQ) & Clinical Guidance
Does S63.221A require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category S63.
Can S63.221A be reported alongside related conditions?
Per Excludes2 instructions, S63.221A and the following may both be reported when both are present: subluxation and dislocation of thumb (S63.1-); strain of muscle, fascia and tendon of wrist and hand (S66.-); burns and corrosions (T20-T32); frostbite (T33-T34).
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as S63.221A, with their registry titles.
- S63 — Dislocation and sprain of joints and ligaments at wrist and hand level
- S63.0 — Subluxation and dislocation of wrist and hand joints
- S63.00 — Unspecified subluxation and dislocation of wrist and hand
- S63.001 — Unspecified subluxation of right wrist and hand
- S63.001A — Unspecified subluxation of right wrist and hand, initial encounter
- S63.001D — Unspecified subluxation of right wrist and hand, subsequent encounter
- S63.001S — Unspecified subluxation of right wrist and hand, sequela
- S63.002 — Unspecified subluxation of left wrist and hand
- S63.002A — Unspecified subluxation of left wrist and hand, initial encounter
- S63.002D — Unspecified subluxation of left wrist and hand, subsequent encounter
- S63.002S — Unspecified subluxation of left wrist and hand, sequela
- S63.003 — Unspecified subluxation of unspecified wrist and hand
- S63.003A — Unspecified subluxation of unspecified wrist and hand, initial encounter
- S63.003D — Unspecified subluxation of unspecified wrist and hand, subsequent encounter
- S63.003S — Unspecified subluxation of unspecified wrist and hand, sequela
- S63.004 — Unspecified dislocation of right wrist and hand
- S63.004A — Unspecified dislocation of right wrist and hand, initial encounter
- S63.004D — Unspecified dislocation of right wrist and hand, subsequent encounter
- S63.004S — Unspecified dislocation of right wrist and hand, sequela
- S63.005 — Unspecified dislocation of left wrist and hand
- S63.005A — Unspecified dislocation of left wrist and hand, initial encounter
- S63.005D — Unspecified dislocation of left wrist and hand, subsequent encounter
- S63.005S — Unspecified dislocation of left wrist and hand, sequela
- S63.006 — Unspecified dislocation of unspecified wrist and hand
- S63.006A — Unspecified dislocation of unspecified wrist and hand, initial encounter
- S63.006D — Unspecified dislocation of unspecified wrist and hand, subsequent encounter
- S63.006S — Unspecified dislocation of unspecified wrist and hand, sequela
- S63.01 — Subluxation and dislocation of distal radioulnar joint
- S63.011 — Subluxation of distal radioulnar joint of right wrist
- S63.011A — Subluxation of distal radioulnar joint of right wrist, initial encounter
- S63.011D — Subluxation of distal radioulnar joint of right wrist, subsequent encounter
- S63.011S — Subluxation of distal radioulnar joint of right wrist, sequela
- S63.012 — Subluxation of distal radioulnar joint of left wrist
- S63.012A — Subluxation of distal radioulnar joint of left wrist, initial encounter
- S63.012D — Subluxation of distal radioulnar joint of left wrist, subsequent encounter
- S63.012S — Subluxation of distal radioulnar joint of left wrist, sequela
- S63.013 — Subluxation of distal radioulnar joint of unspecified wrist
- S63.013A — Subluxation of distal radioulnar joint of unspecified wrist, initial encounter
- S63.013D — Subluxation of distal radioulnar joint of unspecified wrist, subsequent encounter
- S63.013S — Subluxation of distal radioulnar joint of unspecified wrist, sequela
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code S59.221A
Salter-Harris Type II physeal fracture of lower end of radius, right arm, initial encounter for closed fracture
ICD Code S61.221A
Laceration with foreign body of left index finger without damage to nail, initial encounter
ICD Code S62.221A
Displaced Rolando's fracture, right hand, initial encounter for closed fracture
ICD Code S66.221A
Laceration of extensor muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter