ICD-10-CM 2027
ICD-10 code for nervosa anorexia
From the official ICD-10-CM alphabetic index entry “Anorexia › nervosa”. Page updated September 29, 2026.
About coding nervosa anorexia
The ICD-10-CM code for nervosa anorexia is F50.00 (Anorexia nervosa, unspecified). The official index lists 4 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on F50.00.
Within F50.0, choose F50.00 (unspecified) only when documentation doesn't support a more specific option: restricting type (F50.01) and binge eating/purging type (F50.02).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 883 (Disorders of Personality and Impulse Control, relative weight 1.7697), in MDC 19 (Mental Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific nervosa anorexia codes (official index)
Common questions about nervosa anorexia ICD-10 codes
What is the ICD-10 code for nervosa anorexia?
- F50.00 — Anorexia nervosa, unspecified. More specific codes apply when the documentation supports them: F50.9, F50.2, F50.02, F50.01.
What is the ICD-10 code for atypical nervosa anorexia?
- F50.9 — Eating disorder, unspecified.
What is the ICD-10 code for binge-eating type nervosa anorexia?
- F50.2 — Bulimia nervosa (header code; choose a more specific subcode).
What is the ICD-10 code for restricting type nervosa anorexia?
- F50.01 — Anorexia nervosa, restricting type (header code; choose a more specific subcode).
Is F50.00 billable?
- Yes. F50.00 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can F50.00 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict F50.00 as a principal diagnosis.
Is F50.00 a CC or MCC?
- F50.00 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.