G13 ICD-10-CA category: Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere
G13 isn’t a code on its own. Choose one of the 4 codes beneath it, the one the documentation supports.
Official description
G13Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere
ICD-10-CA · Canada
Codes in G13
G13 isn’t a code on its own. Open the code that matches what the note documents.
G13.0Paraneoplastic neuromyopathy and neuropathyG13.1Other systemic atrophy primarily affecting central nervous system in neoplastic diseaseG13.2Systemic atrophy primarily affecting central nervous system in myxoedemaG13.8Systemic atrophy primarily affecting central nervous system in other diseases classified elsewhereNotes for G13
As CIHI prints them, with any note G13 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 6: Diseases of the nervous system (G00-G99)
Where G13 sits
- 1ChapterChapter 6: Diseases of the nervous system (G00-G99)
- 2Block G10-G14Systemic atrophies primarily affecting the central nervous system
- 3Category G13Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
Is G13 a valid ICD-10-CA code?
No. G13 (Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 4 codes; record the one the documentation supports.
Where is G13 in ICD-10-CA?
G13 sits under G10-G14 Systemic atrophies primarily affecting the central nervous system, within Chapter 6: Diseases of the nervous system (G00-G99).
What coding notes apply to G13?
ICD-10-CA lists Excludes notes for G13, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.