G95.9 ICD-10-CM Code: Disease of spinal cord, unspecified
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Diseases of the nervous system (G00-G99) / Other disorders of the nervous system (G89-G99)
G95.9
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceDisease of spinal cord, unspecified
A disease or disorder of the spinal cord where the specific type or nature of the condition is not specified or documented.
Buddy Insight
Disease of spinal cord, unspecified is the least specific code in the spinal cord disease category, used when spinal cord pathology is documented but the specific nature cannot be determined from available clinical information.
CMS-HCC V28
MappedHCC 182
RAF 0.282
CMS-HCC V24
MappedHCC 72
RAF 0.464
ACA/HHS
00
RAF 0
ESRD/PACE
MappedHCC 72
RAF 0.0
RXHCC
MappedHCC 155
RAF 0.0
Code Trumping
Basket needed
Code Book Path
Inclusion Terms
Official- Myelopathy NOS
Excludes 2
Official- myelitis (G04.-)
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for G95.9 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for G95.9 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for G95.9 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for G95.9 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for G95.9 in this effective period.
Buddy Documentation Tip
MEAT Support
Audit Caution
Common Mistakes
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is G95.9 an HCC code?
Yes. G95.9 maps to Spinal Cord Disorders/Injuries under the CMS-HCC V28 risk adjustment model (and Spinal Cord Disorders/Injuries under V24).
HCC Category Mapping
RAF weights shown are the community, non-dual, aged base weights from the CMS risk adjustment model file. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.
MEAT Criteria for G95.9
For G95.9to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.
- MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
- EEvaluate: test results, medication response, or physical findings reviewed by the provider
- AAssess: explicit mention in the assessment or plan with acknowledgment of status
- TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis
Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed G95.9 during that encounter, not just copy-forwarded from a problem list.
What This Code Means
G95.9 is the ICD-10-CM diagnosis code for disease of spinal cord, unspecified. A disease or disorder of the spinal cord where the specific type or nature of the condition is not specified or documented. G95.9 sits in the ICD-10-CM chapter for diseases of the nervous system (g00-g99), within the section covering other disorders of the nervous system (g89-g99).
Under the CMS-HCC V28 risk adjustment model, G95.9 maps to Spinal Cord Disorders/Injuries (HCC 182) with a community, non-dual, aged base RAF weight of 0.282. Under the older V24 model, G95.9 mapped to the same category but with a base RAF weight of 0.464, V28 recalibrated weights across the entire model. V28 is the CMS-HCC risk adjustment model that reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition.
This is a last-resort code; query the provider for more specific diagnosis information when possible. Because G95.9 maps to a payment HCC, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's Medicare Advantage risk adjustment score. When documentation is ambiguous, coders should issue a provider query rather than assume the highest-specificity variant.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for G95.9 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This is a last-resort code; query the provider for more specific diagnosis information when possible
- •Review medical records for any clues about the spinal cord pathology to assign a more specific code
Clinical Significance
Disease of spinal cord, unspecified is the least specific code in the spinal cord disease category, used when spinal cord pathology is documented but the specific nature cannot be determined from available clinical information. While this code captures risk adjustment value, it represents a documentation improvement opportunity. Providers should be queried to determine if a more specific cord condition can be identified.
Documentation Requirements
- ✓Documentation that the patient has a disease affecting the spinal cord
- ✓Any available imaging findings, even if nonspecific
- ✓Clinical symptoms attributable to spinal cord dysfunction
- ✓Neurological examination findings suggesting cord-level pathology (myelopathic signs)
- ✓Explanation of why a more specific diagnosis cannot be assigned
Commonly Confused Codes
- •G95.89: Other specified diseases of spinal cord: use when the specific type is documented but does not have its own code
- •G95.0: Syringomyelia: use when a syrinx is documented
- •G95.20: Unspecified cord compression: use when compression is documented even if the cause is unknown
- •G99.2: Myelopathy in diseases classified elsewhere: use when cord disease is secondary to a classified condition