G13
Header — not billableSystemic atrophies primarily affecting central nervous system in diseases classified elsewhere
The ICD-10 code for systemic atrophies primarily affecting central nervous system in diseases classified elsewhere is G13.
G13 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 4 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under G13
- G13.0Paraneoplastic neuromyopathy and neuropathy
- G13.1Other systemic atrophy primarily affecting central nervous system in neoplastic disease
- G13.2Systemic atrophy primarily affecting the central nervous system in myxedema
- G13.8Systemic atrophy primarily affecting central nervous system in other diseases classified elsewhere
Related codes in this category
- G10Huntington's disease
- G11Hereditary ataxianon-billable header
- G12Spinal muscular atrophy and related syndromesnon-billable header
- G14Postpolio syndrome
- G13Systemic atrophies primarily affecting central nervous system in diseases classified elsewherenon-billable header