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G95.29

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🧬 ICD-10-CM G95.29 — Other Cord Compression

Billable Code Confirmed

ICD-10-CM G95.29 is a valid, billable 5-character diagnosis code. The first three characters (G95) specify other and unspecified diseases of the spinal cord, the 4th character (2) classifies “other and unspecified cord compression,” and the 5th character (9) specifically designates “other cord compression” (used when the cause is known/specified but not captured by a more specific combination code). No additional characters are required.

Non-Billable Parent Codes — Never Submit These

  • ❌ G95 — 3-character header
  • ❌ G95.2 — 4-character header

Always submit G95.29 (or G95.20 if the cause is truly unspecified) when non-traumatic cord compression is documented.

Clinical Context: Distinguishing from Disc or Traumatic Compression

ICD-10-CM G95.29 is used for spinal cord compression caused by conditions other than intervertebral disc herniation, severe spondylosis, or acute trauma. If a patient has cord compression directly due to a herniated disc, you must use the combination codes from the M50 or M51 categories (e.g., M50.00 Cervical disc disorder with myelopathy). If it is a traumatic physical injury, use the appropriate S14, S24, or S34 codes instead.

Code Classification

ICD-10-CM Diagnosis Code — wRVU, assistant payable, and global period fields are not applicable. See CPT Procedural Crosswalk and ICD-10-PCS Crosswalk sections for associated procedural billing.

🔍 Code Description

ICD-10-CM G95.29 classifies Other cord compression. This code is utilized to capture external, non-traumatic mechanical compression of the spinal cord by space-occupying lesions or structural abnormalities that do not have their own exclusive ICD-10-CM category.

Common etiologies that map to this “other” classification include:

  • Epidural Abscesses: Pus accumulation in the epidural space compressing the dural sac.
  • Spinal Epidural Hematomas: Spontaneous or iatrogenic bleeding in the spinal canal.
  • Extramedullary Neoplasms: Metastatic tumors (e.g., breast, prostate, or lung cancer) or primary benign tumors (e.g., meningiomas) pressing against the cord.
  • Severe Bony Deformities: Non-spondylotic structural shifts (like severe kyphoscoliosis) physically impinging the cord.

Clinically, acute cord compression is a neurologic emergency. Patients typically present with localized back pain, progressive motor weakness (paraparesis or quadriparesis), a distinct sensory level (loss of sensation below a certain dermatome), and autonomic dysfunction (urinary retention or bowel incontinence).

🌳 Code Tree / Hierarchy

G95 Other and unspecified diseases of spinal cord ❌ Non-billable
│
├── G95.0 Syringomyelia and syringobulbia ✅ Billable
├── G95.1- Vascular myelopathies 
├── G95.2 Other and unspecified cord compression ❌ Non-billable
│    ├── G95.20 Unspecified cord compression ✅ Billable
│    └── G95.29 Other cord compression ◀ THIS CODE ✅ Billable
│
├── G95.8- Other specified diseases of spinal cord
└── G95.9 Disease of spinal cord, unspecified ✅ Billable

"Other" vs. "Unspecified"

Use G95.29 (“Other”) when the physician has identified the cause of the compression (e.g., “Cord compression secondary to epidural hematoma”), and you are coding that cause concurrently. Use G95.20 (“Unspecified”) only when imaging confirms compression but the etiology remains unknown.

✅ Includes

The following clinical scenarios should trigger the use of G95.29 as a secondary or manifestation code:

  • Spinal cord compression due to extramedullary neoplasm
  • Spinal cord compression due to epidural abscess
  • Spinal cord compression due to epidural hematoma
  • Spinal cord compression due to bony deformities of the vertebral bodies

❌ Excludes

Excludes 1 — Cannot Be Coded Simultaneously with CODE

CodeDescriptionNote
M50.0- / M51.0-Cervical/Thoracic/Lumbar disc disorder with myelopathyMutually exclusive. If the compression is explicitly caused by a herniated disc, the M50/M51 combination codes encompass both the disc issue and the resulting myelopathy/compression.
S14.- / S24.- / S34.-Traumatic spinal cord injuryMutually exclusive. Traumatic compression (e.g., from a burst fracture sustained in an MVA) is coded to the Chapter 19 injury codes.
M47.0-Anterior spinal and vertebral artery compression syndromesDistinct vascular compression syndrome.

📋 Clinical Overview

Associated Manifestations (Code Also)

Cord compression rarely exists without causing severe functional deficits. To fully capture the patient’s complexity and ensure accurate DRG assignment, code the resulting impairments:

  • G82.20 — Paraplegia, unspecified
  • G82.50 — Quadriplegia, unspecified
  • R33.9 — Retention of urine, unspecified (A hallmark of acute cord compression)
  • K59.2 — Neurogenic bowel, not elsewhere classified

Etiology Sequencing (Code First)

If the cord compression is secondary to another condition, ICD-10-CM guidelines generally dictate that the underlying etiology should be sequenced first (especially if it is the primary reason for the encounter/admission):

  • Neoplasm: e.g., C79.51 (Secondary malignant neoplasm of bone) → G95.29
  • Infection: e.g., G06.1 (Intraspinal abscess and granuloma) → G95.29

💰 HCC Risk Adjustment (CMS-HCC v28)

FieldDetail
CMS-HCC Model Versionv28 (2024-2025 Implementation)
HCC Assignment✅ Mapped — HCC 72
HCC CategorySpinal Cord Disorders

G95.29 carries a high risk weight. If a patient has chronic cord compression or residual deficits from a previous decompression surgery, the condition must be documented (MEAT criteria) and coded annually to maintain accurate risk adjustment for Medicare Advantage beneficiaries.

🏥 DRG Assignment

MDC 01 — Diseases and Disorders of the Nervous System

DRGTitleEst. Relative Weight*
DRG 091Other Disorders of Nervous System with MCC~1.95
DRG 092Other Disorders of Nervous System with CC~1.10
DRG 093Other Disorders of Nervous System without CC/MCC~0.80

Approximate. Verify against IPPS FY2026 Final Rule tables.

🛠️ Commonly Associated CPT Codes (Neurosurgery / ED)

CPT CodeDescriptionModifier Notes / wRVU
99285Emergency department visit for the evaluation and management of a patient (High MDM)Acute cord compression is a neurosurgical emergency requiring high-level ED workup.
72146Magnetic resonance (e.g., proton) imaging, spinal canal and contents, thoracic; without contrast materialOften the definitive diagnostic modality to visualize the compression.
63267Laminectomy for excision or evacuation of intraspinal lesion other than neoplasm, extradural; lumbarCommon decompressive surgery for an epidural hematoma or abscess. (wRVU: ~24.50)
63276Laminectomy for biopsy/excision of intraspinal neoplasm; extradural, cervicalUsed when the cord compression is caused by an epidural tumor. (wRVU: ~31.00)

💊 Coding Scenarios and Examples

Scenario 1 — ED to OR: Epidural Abscess

Clinical Vignette: A 55-year-old male with a history of IV drug use presents to the ED with severe mid-back pain, bilateral leg weakness (3/5 strength), and inability to void for 12 hours. Urgent MRI of the thoracic spine reveals a large epidural fluid collection from T6-T8 causing severe spinal cord compression. The patient is admitted and rushed to the OR where neurosurgery performs a T6-T8 laminectomy for evacuation of an epidural abscess.

Principal Diagnosis:

  • G06.1 — Intraspinal abscess and granuloma (The underlying etiology/primary reason for admission)

Secondary Diagnoses:

  • G95.29 — Other cord compression (The specific manifestation)
  • G82.22 — Paraplegia, incomplete (Functional deficit)
  • R33.9 — Retention of urine, unspecified
  • F19.20 — Other psychoactive substance dependence, uncomplicated

Procedures:

  • 63266 — Laminectomy for evacuation of intraspinal lesion (other than neoplasm), thoracic

Scenario 2 — Oncology Clinic: Metastatic Compression

Clinical Vignette: A 68-year-old female with known stage IV breast cancer presents to the oncology clinic with new-onset numbness in her legs and difficulty walking. An urgent MRI shows a metastatic lesion in the L1 vertebral body protruding into the epidural space, causing early cord compression. The oncologist immediately consults radiation oncology for emergent palliative radiation and starts the patient on high-dose dexamethasone.

Diagnoses:

  • C79.51 — Secondary malignant neoplasm of bone (Underlying cause)
  • G95.29 — Other cord compression (The acute oncologic emergency)
  • C50.911 — Malignant neoplasm of unspecified site of right female breast (Primary neoplasm)

Procedure:

  • 99215 — E/M established patient, High MDM

⚠️ Coding Pitfalls and Tips

Pitfall or Tip
❌Misusing G95.29 for Disc Herniations. Never code G95.29 if the documentation states the cord is compressed by a herniated or bulging intervertebral disc. This violates Excludes1 guidelines. Use the M50 (cervical) or M51 (thoracic/lumbar) myelopathy combination codes instead.
❌Missing the Underlying Cause. Coding G95.29 in isolation without capturing the tumor, hematoma, or abscess that is physically causing the compression paints an incomplete clinical and reimbursement picture. Always look for the primary etiology.
✅Query for Vague Documentation. If an MRI report says “severe cord compression” but the attending physician does not carry it over to the assessment/plan or specify the cause, send a CDI query to confirm the diagnosis and its etiology for proper sequencing.
✅Code Associated Paralysis. Always capture the functional severity. Adding a code like G82.20 (Paraplegia) or G82.50 (Quadriplegia) acts as a Major Complication/Comorbidity (MCC), optimizing the DRG if sequenced on an inpatient claim.^4

📚 Sources

1. CMS/NCHS. *ICD-10-CM Official Guidelines for Coding and Reporting, FY2026.* Section I.C.6: Diseases of the Nervous System.
2. Cole, J. S., & Patchell, R. A. (2008). Metastatic epidural spinal cord compression. *The Lancet Neurology*, 7(5), 459-466. *(Source for clinical presentation and oncologic etiologies).*
3. CMS. *2025-2026 Medicare Advantage Risk Adjustment — CMS-HCC Model v28 ICD-10-CM Mappings.*
4. CMS. *IPPS Final Rule FY2026 — MS-DRG Definitions Manual v43.*
5. American Medical Association (AMA). *CPT Professional Edition 2026.* Surgery / Nervous System Guidelines.

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