G12.20 ICD-10-CA code: Amyotrophic lateral sclerosis
G12.20 is the ICD-10-CA code for “Amyotrophic lateral sclerosis” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
G12.20Amyotrophic lateral sclerosis
ICD-10-CA · Canada · Also written G1220
Index terms
Entries in CIHI’s alphabetical index that lead to G12.20. Searching the index by the condition the note names is how coders reach this code.
- Paralysis, paralytic (complete) (incomplete), amyotrophic
- Sclerosis, sclerotic, amyotrophic (familial) (lateral) (sporadic)
- Sclerosis, sclerotic, lateral, amyotrophic (familial) (spinal) (sporadic)
- Paralysis, paralytic (complete) (incomplete), lateral (familial) (sporadic)
- Amyotrophia, amyotrophy, amyotrophic, lateral sclerosis (familial) (sporadic)
- Amyotrophia, amyotrophy, amyotrophic, spinal progressive (familial) (sporadic)
- Paralysis, paralytic (complete) (incomplete), muscle, muscular NEC, progressive
- Sclerosis, sclerotic, spinal (cord) (progressive), lateral (amyotrophic) (familial) (sporadic)
- Disease, diseased, motor neuron, amyotrophic lateral sclerosis (familial) (mixed type) (spinal) (sporadic)
Notes for G12.20
As CIHI prints them, with any note G12.20 takes from the headings above it.
Includes
- Lateral sclerosis:• familial (FALS)• sporadic
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 G12.20 sits
- 1ChapterChapter 6: Diseases of the nervous system (G00-G99)
- 2Block G10-G14Systemic atrophies primarily affecting the central nervous system
- 3Category G12Spinal muscular atrophy and related syndromes
- 4Subcategory G12.2Motor neuron disease
- 5Valid code G12.20Amyotrophic lateral sclerosis
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
What does ICD-10-CA code G12.20 mean?
G12.20 is the ICD-10-CA code for “Amyotrophic lateral sclerosis” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is G12.20 in ICD-10-CA?
G12.20 sits under G12.2 Motor neuron disease, within G12 Spinal muscular atrophy and related syndromes, within 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 G12.20?
ICD-10-CA lists Includes, Excludes notes for G12.20, 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.