ICD-10-CM G13: Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere

ICD-10-CM Diagnosis Code (2025)

Official Description for G13

Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere

Coding Notes & Guidelines for G13

Code First

underlying neoplasm (C00-D49)

Code First

underlying neoplasm (C00-D49)

Code First
  • underlying disease, such as:
  • hypothyroidism (E03.-)
  • myxedematous congenital iodine deficiency (E00.1)
Code First

underlying disease

Inclusion Terms
  • Carcinomatous neuromyopathy
  • Sensorial paraneoplastic neuropathy [Denny Brown]
Inclusion Terms

Paraneoplastic limbic encephalopathy

Child Codes (More Specific Codes for G13):

G13.0 - Paraneoplastic neuromyopathy and neuropathy G13.1 - Other systemic atrophy primarily affecting central nervous system in neoplastic disease G13.2 - Systemic atrophy primarily affecting the central nervous system in myxedema G13.8 - Systemic atrophy primarily affecting central nervous system in other diseases classified elsewhere

About ICD-10-CM Code G13 (Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere)

ICD-10-CM code G13 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM G13 became effective on October 1, 2024.

This page provides detailed information about G13 - Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere.