ICD-10 F50.021
Billable / Specific CCAnorexia nervosa, binge eating/purging type, moderate
About ICD-10-CM F50.021
ICD-10-CM code F50.021 represents Anorexia nervosa, binge eating/purging type, moderate. This is a billable/specific code in the Mental, Behavioral, and Neurodevelopmental chapter (block F50). The 2026 edition of ICD-10-CM F50.021 became effective on October 1, 2025.
Coding Tips for F50.021
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
F50.021 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under F50.021. Per CMS ICD-10-CM Tabular 2026.
- Anorexia nervosa, binge eating/purging type, with a body mass index of 16.0-16.99 kg/m2
Inpatient DRG Impact, CC
codes Anorexia nervosa, binge eating/purging type, moderate. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for F50.021
Local Coverage Determinations (LCDs) from CMS MACs that list F50.021 as a covered diagnosis.
Showing top 10 of 279 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing F50.021.
1 Cigna
5 Medicare
CPT Codes Commonly Billed with F50.021
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To F50.021
Other codes in section F50-F59 (Behavioral syndromes associated with physiological disturbances and physical factors).
ICD-10 F50.021, Billing FAQ
Is ICD-10 code F50.021 billable? +
Yes, F50.021 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to F50.021? +
ICD-10 F50.021 includes: Anorexia nervosa, binge eating/purging type, with a body mass index of 16.0-16.99 kg/m2.
Is F50.021 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
Get the full PayerReady toolkit
Free access to CPT/ICD-10 lookup, denial appeals, fee comparator, and claim auditing with credentialing enrollment.
Start free →Run this code through our claim audit tool
Check NCCI bundling, MUE limits, and modifier logic before submission.
Try the auditor →Did this page help?
Quick signal so we know what to improve.
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team