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ICD-10-CM 2027 diagnosis code

F50.01Anorexia nervosa, restricting type

Not billable — use a more specific code

F50.01 is a header code, so it can't be reported by itself. Choose one of the 6 more specific codes beneath it.

Code last changed in FY2025 (effective October 1, 2024). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About F50.01

F50.01 is the ICD-10-CM diagnosis code for Anorexia nervosa, restricting type. It belongs to category F50 (eating disorders), block F50-F59 (behavioral syndromes associated with physiological disturbances and physical factors) and chapter 5 (mental, Behavioral and Neurodevelopmental disorders). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.

Within F50.0 (Anorexia nervosa), F50.01 is specifically for Anorexia nervosa, restricting type. Related codes cover unspecified (F50.00) and binge eating/purging type (F50.02).

To report this condition, pick the subcode that matches the documentation: F50.010 (mild), F50.011 (moderate), F50.012 (severe), F50.013 (extreme), F50.014 (in remission) and F50.019 (unspecified).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2025 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as 307.1 (Anorexia nervosa).

Specific codes under F50.01

Notes that apply from higher levels

Instructions written at a parent level also apply to F50.01.

› From F50.0 Anorexia nervosa
Excludes1
  • loss of appetite (R63.0)
  • psychogenic loss of appetite (F50.89)
› From F50 Eating disorders
Excludes1
  • anorexia NOS (R63.0)
  • feeding problems of newborn (P92.-)
  • polyphagia (R63.2)
Excludes2
  • feeding difficulties (R63.3-)
  • feeding disorder in infancy or childhood (F98.2-)

Broader instructions also apply from Chapter 5: Mental, Behavioral and Neurodevelopmental disorders.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to F50.01.

ICD-9-CM equivalent

Converter →
  • 307.1Anorexia nervosaapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • FY2025 (effective 10/1/2024): Expanded — no longer billable

Common questions about F50.01

Is F50.01 billable?

No. F50.01 is a header code. Report one of its more specific subcodes instead.

What is the ICD-9 code for F50.01?

The CMS General Equivalence Mappings map F50.01 to ICD-9-CM 307.1.