2027 ICD-10-CM Diagnosis Code G95.9Disease of spinal cord, unspecified
ICD-10-CM Codes›G00–G99›G89-G99›G95
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Risk Adjusts — HCC 182
- Chronic Condition
G95.9 is a billable ICD-10-CM diagnosis code for disease of spinal cord, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 91 through 93, 974 through 976. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 159 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other nervous system disorders (neither hereditary nor degenerative).
For Medicare Advantage risk adjustment, G95.9 maps to CMS-HCC Category 182 (Spinal Cord Disorders/Injuries) under the V28 model, adding a risk factor of about 0.478 for a community, non-dual, aged beneficiary in payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
G95.9 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2027.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acute complete quadriplegia due to spinal cord lesion between fifth and seventh cervical vertebra
- Acute complete quadriplegia due to spinal cord lesion between first and fourth cervical vertebra
- Acute myelopathy
- Acute paralysis due to lesion of spinal cord
- Cervical myelopathy
- Chronic incomplete quadriplegia due to spinal cord lesion between fifth and seventh cervical vertebra
- Chronic incomplete quadriplegia due to spinal cord lesion between first and fourth cervical vertebra
- Chronic myelopathy
- Chronic paralysis due to lesion of spinal cord
- Complete lesion of lumbar spinal cord
- Complete tetraplegia due to lesion at C1-C4 level
- Complete tetraplegia due to lesion at C5-C7 level
- Disorder of spinal cord co-occurrent with human immunodeficiency virus infection
- Disorder of spinal cord due to and following radiotherapy
- Incomplete tetraplegia due to lesion at C5-C7 level
- Incomplete tetraplegia due to spinal cord lesion at C1-C4 level
- Lesion of spinal cord
- Myelopathy co-occurrent and due to spinal stenosis of thoracic region
- Myelopathy due to excess nutrient
- Myelopathy due to excess zinc
- Myelopathy due to metabolic disorder
- Myelopathy due to spinal stenosis of lumbar region
- Myelopathy post intrathecal injection of chemotherapeutic agent
- Myelopathy with AIDS
- Paralysis due to lesion of spinal cord
- Spinal cord defect affecting skin
- Spinal cord disease
- Spinal stenosis of lumbar region
- Spinal stenosis of thoracic region
- Tetraplegic spinal paralysis
- Thoracic myelopathy
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to G95.9: its own notes plus those printed at G95 and Chapter 6. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Myelopathy NOS
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name G95.9, its category, or a range that includes it.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Disease, diseased See Also: Syndrome;
spinal (cord) G95.9
Myelopathy (spinal cord) G95.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Spinal Cord Diseases
pathologic conditions which feature spinal cord damage or dysfunction, including disorders involving the meninges and perimeningeal spaces surrounding the spinal cord. traumatic injuries, vascular diseases, infections, and inflammatory/autoimmune processes may affect the spinal cord.
Patient EducationClinical
Spinal Cord Diseases
Your spinal cord is a bundle of nerves that runs down the middle of your back. It carries signals back and forth between your body and your brain. It is protected by your vertebrae, which are the bone disks that make up your spine.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert G95.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About G95.9Overview
What is the ICD-10 code for disease of spinal cord, unspecified?
The ICD-10-CM code for disease of spinal cord, unspecified is G95.9 (sometimes written as G959). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is G95.9 (Other and unspecified diseases of spinal cord) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report disease of spinal cord, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does G95.9 group to?
When disease of spinal cord, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 974, 976, 975, 91, 92, 93, with relative weights from 0.7783 to 3.0488 depending on complications. Higher weights mean higher Medicare reimbursement.
Is G95.9 a CC or MCC?
CMS lists G95.9 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 159 closely related codes in its exclusion list.
What is the ICD-9 equivalent of G95.9?
Under the General Equivalence Mappings, disease of spinal cord, unspecified converts to ICD-9-CM 336.9 (spinal cord disease NOS). The mapping is approximate, so confirm the match fits the documentation.
What HCC is G95.9?
G95.9 (disease of spinal cord, unspecified) maps to CMS-HCC Category 182 (Spinal Cord Disorders/Injuries), commonly written as HCC 182, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2027. It mapped to HCC 72 under the retired V24 model. It also maps in the PACE (CMS-HCC V22), ESRD (V21), and ESRD (V24) models. In the Part D prescription drug model it maps to RxHCC 155.
Does G95.9 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, G95.9 adds a risk adjustment factor of about 0.478 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.270 to 0.478 depending on the payment segment). A more severe related category (HCC 180, HCC 181, HCC 191, and HCC 192) supersedes it when both are reported. See the full factor table on the HCC 182 category page.
