G82.51 Quadriplegia, C1-C4 complete

ICD-10-CM G82.51: Quadriplegia, C1-C4 complete

ICD-10-CM code G82.51 represents a diagnosis of complete quadriplegia at the C1 through C4 spinal cord levels. This active terminology record is classified under the parent category G82.5 for quadriplegia. The code distinguishes complete paralysis from incomplete injuries and helps standardize documentation for clinical care and coverage navigation. 1 2 5

Plain-language overview

Quadriplegia involves partial or complete paralysis of all four limbs, including abdominal and chest muscles, resulting from a spinal cord injury or disease in the neck region. 3

A complete spinal cord injury is defined as having no sensory or motor function below the level of the injury, with both sides of the body equally affected. 3

What this code represents

The official display label for ICD-10-CM code G82.51 is Quadriplegia, C1-C4 complete, and the concept is semantically classified as a disease or syndrome. 1

Code G82.51 is a narrower concept under the parent code G82.5 for quadriplegia, distinguishing it from incomplete C1-C4 injuries and C5-C7 injuries listed in the same category. 1 2

Coding details

The ICD-10-CM coding system categorizes quadriplegia based on the level of spinal cord injury and whether the paralysis is complete or incomplete, with G82.51 specifying a complete C1-C4 injury. 5

Documentation considerations

High-quality documentation for G82.51 ties clinical claims to observable findings or timeline data, and records functional impacts on driving, work, school, or self-care as clinical outcomes. 4

Medical providers document all aspects of quadriplegia, including secondary conditions, and understanding these codes helps patients and caregivers manage insurance coverage and medical documentation. 5

What the sources add

While official terminology sources define the active code hierarchy and label for G82.51, clinical guides emphasize that complex cases benefit from coordinated plans across neurology, primary care, and rehabilitation. 1 4

General coding awareness materials list G82.51 among specific quadriplegia codes, whereas patient-facing resources explain that complete quadriplegia means total loss of muscle function and sensation below the injury. 3 5

Sources

1. ICD-10-CM G82.51 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
3. Quadriplegia with a focus on spinal cord injuries — homestatehealth.com; accessed 2026-07-27.
4. Quadriplegia, C1-C4 Complete | ICD-10-CM G82.51 Clinical Guide — sprypt.com; accessed 2026-07-27.
5. ICD 10 Code for Quadriplegia | Ethos Therapy Solutions — ethosoutcomes.com; accessed 2026-07-27.