F50.1 ICD-10-CA code: Atypical anorexia nervosa
F50.1 is the ICD-10-CA code for “Atypical anorexia nervosa” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
F50.1Atypical anorexia nervosa
ICD-10-CA · Canada · Also written F501
Index terms
Entries in CIHI’s alphabetical index that lead to F50.1. Searching the index by the condition the note names is how coders reach this code.
- Aphagia, psychogenic
- Anorexia, nervosa, atypical
Notes for F50.1
As CIHI prints them, with any note F50.1 takes from the headings above it.
Includes
- Disorders of psychological developmentFrom Chapter 5: Mental and behavioural disorders (F00-F99)
Excludes
Conditions classified elsewhere.
- Anorexia NOS (R63.0)feeding:• difficulties and mismanagement (R63.3)• disorder of infancy or childhood (F98.2)polyphagia (R63.2)From F50 Eating disorders
- Symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)From Chapter 5: Mental and behavioural disorders (F00-F99)
Note
- Disorders that fulfil some of the features of anorexia nervosa but in which the overall clinical picture does not justify that diagnosis. For instance, one of the key symptoms, such as amenorrhoea or marked dread of being fat, may be absent in the presence of marked weight loss and weight-reducing behaviour. This diagnosis should not be made in the presence of known physical disorders associated with weight loss.
Where F50.1 sits
- 1ChapterChapter 5: Mental and behavioural disorders (F00-F99)
- 2Block F50-F59Behavioural syndromes associated with physiological disturbances and physical factors
- 3Category F50Eating disorders
- 4Valid code F50.1Atypical anorexia nervosa
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 F50.1 mean?
F50.1 is the ICD-10-CA code for “Atypical anorexia nervosa” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is F50.1 in ICD-10-CA?
F50.1 sits under F50 Eating disorders, within F50-F59 Behavioural syndromes associated with physiological disturbances and physical factors, within Chapter 5: Mental and behavioural disorders (F00-F99).
What coding notes apply to F50.1?
ICD-10-CA lists Note, Excludes, Includes notes for F50.1, 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.