G90.51 ICD-10-CA code: Complex regional pain syndrome, type I, lower limb
G90.51 is the ICD-10-CA code for “Complex regional pain syndrome, type I, lower limb” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
G90.51Complex regional pain syndrome, type I, lower limb
Short description: Complx reg pain syndr type I low limb
ICD-10-CA · Canada · Also written G9051
Index terms
Entries in CIHI’s alphabetical index that lead to G90.51. Searching the index by the condition the note names is how coders reach this code.
- Dystrophy, dystrophia, reflex (sympathetic), lower limb
- Dystrophy, dystrophia, sympathetic (reflex), lower limb
- Syndrome, complex regional pain (other) (unspecified), type I, lower limb
- Complex regional pain syndrome (CRPS) (other) (unspecified), type I, lower limb
Notes for G90.51
As CIHI prints them, with any note G90.51 takes from the headings above it.
Includes
- Sympathetic reflex dystrophy, lower limb
Excludes
Conditions classified elsewhere.
- Dysfunction of autonomic nervous system due to alcohol (G31.2)From G90 Disorders of autonomic nervous system
- 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 G90.51 sits
- 1ChapterChapter 6: Diseases of the nervous system (G00-G99)
- 2Block G90-G99Other disorders of the nervous system
- 3Category G90Disorders of autonomic nervous system
- 4Subcategory G90.5Complex regional pain syndrome, type I
- 5Valid code G90.51Complex regional pain syndrome, type I, lower limb
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 G90.51 mean?
G90.51 is the ICD-10-CA code for “Complex regional pain syndrome, type I, lower limb” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is G90.51 in ICD-10-CA?
G90.51 sits under G90.5 Complex regional pain syndrome, type I, within G90 Disorders of autonomic nervous system, within G90-G99 Other disorders of the nervous system, within Chapter 6: Diseases of the nervous system (G00-G99).
What coding notes apply to G90.51?
ICD-10-CA lists Includes, Excludes notes for G90.51, 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.