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G13 Systemic atrophies aff cnsl in diseases classd elswhr

ICD-10-CM category G13 sits in Chapter 6 (Diseases of the nervous system, G00-G99). It contains 4 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Billable codes in G13

CodeDescription
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

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