2026 ICD-10-CM Diagnosis Code S63.599SOther specified sprain of unspecified wrist, sequela
S63.599S is a billable ICD-10-CM diagnosis code for other specified sprain of unspecified wrist, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 562 through 563. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
S63.599S is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Carpal joint sprain
- Complete tear of ulnolunate ligament
- Complete tear of wrist ligament
- Complete tear triangular fibrocartilage
- Complete tear ulnar carpal complex nonspecific
- Complete tear ulnar-carpal meniscus
- Distal radioulnar joint sprain
- Fracture of head of radius with dislocation of distal radioulnar joint and interosseous membrane disruption
- Fracture of radial head
- Injury to triangular fibrocartilage of wrist joint
- Lesion of ligament of wrist and/or hand
- Sprain of radiolunate ligament
- Sprain of radioscaphocapitate ligament
- Sprain of radioscapholunate ligament
- Sprain of ulnar carpal complex ligament
- Sprain of ulnar collateral ligament of wrist joint
- Sprain of ulnolunate ligament
- Sprain short intrinsic ligament nonspecific
- Sprain triangular fibrocartilage
- Sprain ulnar-carpal meniscus
- Sprain volar intercarpal ligament or V ligament
- Traumatic division of wrist ligament
- Traumatic rupture of triangular fibrocartilage complex of wrist region
- Triangular fibrocartilage detachment
- Triangular fibrocartilage tear
- Triangular ligament tear
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Dislocation and sprain of joints and ligaments at wrist and hand level (S63). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Sprains and Strains
A sprain is a stretched or torn ligament. Ligaments are tissues that connect bones at a joint. Falling, twisting, or getting hit can all cause a sprain. Ankle and wrist sprains are common. Symptoms include pain, swelling, bruising, and being unable to move your joint. You might feel a pop or tear when the injury happens.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert S63.599S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S63.599SOverview
Is S63.599S (Other specified sprain of unspecified wrist) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other specified sprain of unspecified wrist, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in S63.599S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the other specified sprain of unspecified wrist itself has resolved, not the original event.
What MS-DRG does S63.599S group to?
When other specified sprain of unspecified wrist, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 562, 563, with relative weights from 0.8955 to 1.4248 depending on complications. Higher weights mean higher Medicare reimbursement.
Is S63.599S exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for other specified sprain of unspecified wrist, sequela on inpatient claims.
What is the ICD-9 equivalent of S63.599S?
Under the General Equivalence Mappings, other specified sprain of unspecified wrist, sequela converts to ICD-9-CM 905.7 (late effec sprain/strain). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
