2026 ICD-10-CM Diagnosis Code S33.101DDislocation of unspecified lumbar vertebra, subsequent encounter
S33.101D is a billable ICD-10-CM diagnosis code for dislocation of unspecified lumbar vertebra, 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Dislocations, subsequent encounter.
Code Identity
Code Classification
Present on Admission (POA)Billing
S33.101D 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.
- Arthropathy of lumbar facet joint
- Central cord syndrome of lumbar spinal cord due to closed spinal dislocation
- Central cord syndrome of lumbar spinal cord due to open spinal dislocation
- Central cord syndrome of lumbar spinal cord due to traumatic injury
- Closed dislocation lumbar spine
- Closed dislocation of thoracic and lumbar spine
- Closed spinal dislocation with anterior lumbar cord lesion
- Closed spinal dislocation with cauda equina lesion
- Closed spinal dislocation with complete lumbar cord lesion
- Closed traumatic dislocation of lumbar vertebra
- Closed traumatic dislocation of lumbosacral joint
- Closed traumatic dislocation of pelvis
- Closed traumatic dislocation of thoracic vertebra
- Dislocation of lumbar facet joint
- Fracture dislocation of lumbar spine
- Fracture dislocation of lumbosacral junction
- Fracture dislocation of spine
- Open dislocation of lumbar vertebra
- Open dislocation of lumbosacral joint
- Open spinal dislocation with anterior lumbar cord lesion
- Open spinal dislocation with cauda equina lesion
- Open spinal dislocation with complete lumbar cord lesion
- Posterior cord syndrome of lumbar spinal cord
- Posterior cord syndrome of lumbar spinal cord due to open dislocation of lumbar spine
- Posterior cord syndrome of lumbar spine due to closed dislocation of lumbar spine
- Spinal dislocation with lumbar cord lesion
- Traumatic dislocation of joint of lumbar vertebra
- Traumatic dislocation of lumbosacral joint
- Traumatic injury of thoracic and lumbar vertebral column regions
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Dislocation and sprain of joints and ligaments of lumbar spine and pelvis (S33). 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
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 S33.101D to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S33.101DOverview
Is S33.101D (Dislocation of unspecified lumbar vertebra) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report dislocation of unspecified lumbar vertebra, subsequent encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character D in S33.101D mean?
The final character D marks a subsequent encounter: use it for routine care while the dislocation of unspecified lumbar vertebra is healing, after active treatment has ended.
What MS-DRG does S33.101D group to?
When dislocation of unspecified lumbar vertebra, 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 S33.101D 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 dislocation of unspecified lumbar vertebra, subsequent encounter on inpatient claims.
What is the ICD-9 equivalent of S33.101D?
Under the General Equivalence Mappings, dislocation of unspecified lumbar vertebra, 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.
