2026 ICD-10-CM Diagnosis Code S63.339DTraumatic rupture of unspecified ulnocarpal (palmar) ligament, subsequent encounter

ICD-10-CM Codes›S00–T88›S60-S69›S63

ICD-10-CM S63.339D
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S63.339D is a billable ICD-10-CM diagnosis code for traumatic rupture of unspecified ulnocarpal (palmar) ligament, subsequent encounter. The 7th character D marks it as a subsequent encounter code, used during routine care in the healing or recovery phase. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 949 through 950. The code is exempt from POA reporting. Coders also document this condition as traumatic rupture of collateral ligament of wrist. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Sprains and strains, subsequent encounter.

Code Identity

ICD-10-CM Code
S63.339D
Billable Status
Yes — Valid for Submission
Code Describes
Traumatic rupture of unspecified ulnocarpal (palmar) ligament, subsequent encounter
Short Description
Traumatic rupture of unsp ulnocarpal (palmar) ligament, subs
Parent Code
S63.339
Traumatic rupture of unspecified ulnocarpal (palmar) ligament

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS60-S69Injuries to the wrist, hand and fingers
CategoryS63Dislocation and sprain of joints and ligaments at wrist and hand level
This CodeS63.339DTraumatic rupture of unspecified ulnocarpal (palmar) ligament, subsequent encounter

Present on Admission (POA)Billing

S63.339D 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.

  • Traumatic rupture of collateral ligament of wrist
  • Traumatic rupture of ulnocarpal ligament

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.

CCSR INJ061
Sprains and strains, subsequent encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

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 S63.339D to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V58.89 Other specfied aftercare
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About S63.339DOverview

Is S63.339D a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report traumatic rupture of unspecified ulnocarpal (palmar) ligament, subsequent encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character D in S63.339D mean?

The final character D marks a subsequent encounter: use it for routine care while the traumatic rupture of unspecified ulnocarpal (palmar) ligament is healing, after active treatment has ended.

What MS-DRG does S63.339D group to?

When traumatic rupture of unspecified ulnocarpal (palmar) ligament, subsequent encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 949, 950, with relative weights from 0.6277 to 1.1897 depending on complications. Higher weights mean higher Medicare reimbursement.

Is S63.339D 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 traumatic rupture of unspecified ulnocarpal (palmar) ligament, subsequent encounter on inpatient claims.

What is the ICD-9 equivalent of S63.339D?

Under the General Equivalence Mappings, traumatic rupture of unspecified ulnocarpal (palmar) ligament, subsequent encounter converts to ICD-9-CM V58.89 (other specfied aftercare). 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.