G13.2

Billable code

Systemic atrophy primarily affecting the central nervous system in myxedema

The ICD-10 code for systemic atrophy primarily affecting the central nervous system in myxedema is G13.2.

Clinical notes

Code first

This code represents a manifestation of an underlying disease. Coding convention requires the underlying (etiology) code to be sequenced first, with this code listed second.

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

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

•This code represents a manifestation. Documentation should identify the underlying condition, which must be coded first.
•As a general rule, code to the highest level of specificity supported by the documentation in the medical record.

Related codes in this category

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

ICD-9-CM equivalent

Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.

3317Approximate match

View full ICD-10 → ICD-9 crosswalk →

Associated MS-DRGs

G13.2 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.

Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.