S63.112A is the authoritative medical code for Subluxation of metacarpophalangeal joint of left thumb, initial encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for subluxation of metacarpophalangeal joint of left thumb, initial encounter (ICD-10-CM S63.112A), 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 metacarpophalangeal joint of left thumb, initial encounter is a billable ICD-10-CM diagnosis code S63.112A. 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): 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 S63.112A 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.
- 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 S63.112A require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category S63.
Can S63.112A be reported alongside related conditions?
Per official ICD-10-CM Excludes2 instructions, S63.112A and the following are not considered part of each other and may both be reported when both conditions are present: 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).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to S63.112A in its code family, 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
View all 40 codes in the S63 family