⚕️ICD-10 CM G80.0 - Spastic Quadriplegic Cerebral Palsy

Code Description

ICD-10 CM G80.0 represents Spastic Quadriplegic Cerebral Palsy. This is a specific subtype of cerebral palsy characterized by spasticity (stiff muscles) and weakness affecting all four limbs (quadriplegia), as well as the trunk and face. It is often the most severe form of cerebral palsy due to the extensive involvement of the motor system.^{CMS ICD-10}

Clinical Overview

Spastic quadriplegic cerebral palsy results from damage to the motor centers of the developing brain, typically occurring before, during, or shortly after birth. Patients often experience significant motor impairments, difficulty with swallowing and speech, and a high prevalence of comorbidities such as epilepsy, intellectual disabilities, and orthopedic complications.^NINDS

Coding Hierarchy (Code Tree)

This code exists within the following hierarchy in the ICD-10-CM structure:

Chapter VI: Diseases of the nervous system (G00-G99)
- Block: Cerebral palsy and other paralytic syndromes (G80-G83)
  - Category: Cerebral palsy (G80)
    - Subcategory: Spastic quadriplegic cerebral palsy (G80.0)

Official Coding Guidelines & Notes

Includes

This code includes conditions specified as:

Cerebral palsy (spastic) quadriplegic
Quadriplegic cerebral palsy^{WHO ICD-10}

Excludes1

Note: Excludes1 means “not coded here”. If the patient has this condition, do not use G80.0.

Congenital malformations of the nervous system (Q04.-)^{CMS ICD-10}

Excludes2

Note: Excludes2 means “not included here”. The patient may have both conditions, but code separately.

Acquired cerebral palsy (G83.1)
Spastic diplegic cerebral palsy (G80.1)
Spastic hemiplegic cerebral palsy (G80.2)^{CMS ICD-10}

Coding Tips

Intellectual Disability: If the patient has associated intellectual disabilities, code the intellectual disability first or concurrently using codes from category F70-F79.^{Coding Clinic}
Epilepsy: If the patient has associated epilepsy, assign the appropriate code from category G40 or G41.
Vision/Hearing: Code any associated vision (H54.-) or hearing (H90.-) impairments.
Specificity: Ensure documentation specifically supports “quadriplegic” and “spastic.” If the type is unspecified, use G80.9.

Reimbursement & Risk Adjustment

HCC (Hierarchical Condition Category)

Status: Yes
Model: CMS-HCC V28 (2024 Model)
Category: Cerebral Palsy maps to specific HCC categories (often HCC 54 or similar depending on the specific model year) which significantly impact Risk Adjustment Factor (RAF) scores.^{CMS Risk Adjustment}
Impact: Accurate documentation of G80.0 is critical for Medicare Advantage plans and ACA exchanges to reflect the high cost and complexity of care associated with this chronic neurological condition.

wRVU (Work Relative Value Unit)

Value: N/A
Reason: G80.0 is an ICD-10-CM diagnosis code. wRVU values are assigned to CPT/HCPCS procedure codes (e.g., 99213), not diagnosis codes.^{AMA CPT}

Assistant Surgeon Payable

Status: N/A
Reason: Assistant surgeon modifiers (e.g., -80, -81, -82) apply to surgical CPT codes. Diagnosis codes do not have assistant payable status.^{CMS MPFS}

Applicability: Yes
Impact: G80.0 influences DRG assignment when used as a principal or secondary diagnosis in inpatient settings.
MDC: Typically falls under MDC 01 (Diseases and Disorders of the Nervous System).
CC/MCC: Cerebral Palsy is often considered a Complication or Comorbidity (CC). If associated with major complications (e.g., severe malnutrition, pneumonia), it may contribute to MCC status depending on the specific DRG logic.^{CMS MS-DRG}

Coding Examples

Example 1: Initial Pediatric Diagnosis

Scenario: A 2-year-old child is evaluated by neurology following developmental delays. MRI shows periventricular leukomalacia. The physician diagnoses spastic quadriplegic cerebral palsy.

Primary Diagnosis: G80.0 (Spastic quadriplegic cerebral palsy)
Secondary Diagnosis: P91.2 (Cerebral ischemia of newborn) - if applicable based on history
Secondary Diagnosis: F70 (Mild intellectual disabilities) - if documented
Note: Link the CP to any known birth complications if known.^{Coding Clinic}

Example 2: Adult Management with Comorbidities

Scenario: An adult patient with known CP presents for management of severe spasticity and contractures.

Primary Diagnosis: G80.0 (Spastic quadriplegic cerebral palsy)
Secondary Diagnosis: M24.50 (Contracture, unspecified joint)
Secondary Diagnosis: G40.909 (Epilepsy, unspecified)
Procedure Code: 95992 (Evaluation of spinal cord stimulation system) - if applicable
Note: Capture HCC status annually for risk adjustment.^{CMS Risk Adjustment}

Example 3: Inpatient Admission for Pneumonia

Scenario: Patient with G80.0 is admitted with aspiration pneumonia.

Principal Diagnosis: J69.0 (pneumonitis due to inhalation of food and vomit)
Secondary Diagnosis: G80.0 (Spastic quadriplegic cerebral palsy)
Secondary Diagnosis: R13.10 (Dysphagia, unspecified)
Note: The CP is a significant comorbidity affecting the DRG weight.^{CMS MS-DRG}

While G80.0 does not use modifiers, associated E/M or Procedure codes might:

-25: Significant, Separately Identifiable Evaluation and Management Service by the Same Physician or Other Qualified Health Care Professional on the Same Day of the Procedure or Other Service.
-59: Distinct Procedural Service.
-51: Multiple Procedures.
-RT / -LT: Right Side / Left Side (if applicable to related orthopedic procedures).
-EP: Service provided as part of Medicaid Early and Periodic Screening, Diagnostic, and Treatment (EPSDT) program (common in pediatric CP cases).^{AMA CPT}

Sources

^{CMS ICD-10} Centers for Medicare & Medicaid Services, ICD-10-CM Official Guidelines for Coding and Reporting. ^NINDS National Institute of Neurological Disorders and Stroke, Cerebral Palsy Information Page. ^{WHO ICD-10} World Health Organization, ICD-10 Version:2019. ^{Coding Clinic} AHA Coding Clinic for ICD-10-CM/PCS. ^{CMS Risk Adjustment} CMS Medicare Advantage Risk Adjustment Data Processing System. ^{AMA CPT} American Medical Association, CPT Professional Edition. ^{CMS MPFS} CMS Medicare Physician Fee Schedule. ^{CMS MS-DRG} CMS Medicare Severity Diagnosis Related Groups Definitions Manual.

Explorer

G80.0