2026 ICD-10-CM Diagnosis Code S63.033ASubluxation of midcarpal joint of unspecified wrist, initial encounter

ICD-10-CM Codes›S00–T88›S60-S69›S63

ICD-10-CM S63.033A
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S63.033A is a billable ICD-10-CM diagnosis code for subluxation of midcarpal joint of unspecified wrist, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. 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, 963 through 965. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Dislocations, initial encounter.

Code Identity

ICD-10-CM Code
S63.033A
Billable Status
Yes — Valid for Submission
Code Describes
Subluxation of midcarpal joint of unspecified wrist, initial encounter
Short Description
Subluxation of midcarpal joint of unsp wrist, init encntr
Parent Code
S63.033
Subluxation of midcarpal joint of unspecified wrist

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 CodeS63.033ASubluxation of midcarpal joint of unspecified wrist, initial encounter

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Closed dislocation of perilunate joint
  • Closed fracture dislocation perilunate transscaphoid
  • Closed fracture of lunate bone of wrist
  • Closed fracture of scaphoid bone with dislocation of perilunate joint
  • Closed fracture subluxation lunate
  • Closed fracture subluxation midcarpal
  • Closed fracture subluxation of wrist
  • Closed fracture subluxation perilunate
  • Closed fracture subluxation perilunate transscaphoid
  • Closed traumatic dislocation midcarpal joint
  • Closed traumatic subluxation lunate
  • Closed traumatic subluxation midcarpal joint
  • Closed traumatic subluxation of wrist
  • Closed traumatic subluxation perilunate
  • Fracture dislocation of lunate
  • Fracture dislocation of midcarpal joint
  • Fracture subluxation of lunate
  • Fracture subluxation of midcarpal joint
  • Fracture subluxation of perilunate joint
  • Open fracture dislocation midcarpal
  • Open fracture dislocation perilunate transscaphoid
  • Open fracture of lunate bone of wrist
  • Open fracture of scaphoid bone
  • Open fracture subluxation lunate
  • Open fracture subluxation midcarpal
  • Open fracture subluxation of wrist
  • Open fracture subluxation perilunate
  • Open fracture subluxation perilunate transscaphoid
  • Open traumatic dislocation midcarpal joint
  • Open traumatic dislocation perilunate
  • Open traumatic subluxation lunate
  • Open traumatic subluxation midcarpal joint
  • Open traumatic subluxation perilunate
  • Rotary subluxation of scaphoid joint of wrist
  • Transscaphoid-perilunate fracture dislocation
  • Traumatic dislocation of lunate bone
  • Traumatic dislocation of midcarpal joint

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 INJ007
Dislocations, initial encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Dislocations

Dislocations are joint injuries that force the ends of your bones out of position. The cause is often a fall or a blow, sometimes from playing a contact sport. You can dislocate your ankles, knees, shoulders, hips, elbows and jaw. You can also dislocate your finger and toe joints.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert S63.033A to ICD-9-CMHistory

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

ICD-9-CM
833.03 Disloca midcarpal-closed
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 S63.033AOverview

Is S63.033A (Subluxation of midcarpal joint of unspecified wrist) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report subluxation of midcarpal joint of unspecified wrist, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character A in S63.033A mean?

The final character A marks the initial encounter: use it while the patient is receiving active treatment for subluxation of midcarpal joint of unspecified wrist, such as an emergency visit or first evaluation.

What MS-DRG does S63.033A group to?

When subluxation of midcarpal joint of unspecified wrist, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 562, 563, 963, 964, 965, with relative weights from 0.8955 to 2.7338 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of S63.033A?

Under the General Equivalence Mappings, subluxation of midcarpal joint of unspecified wrist, initial encounter converts to ICD-9-CM 833.03 (disloca midcarpal-closed). 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.