CPT 90834 + ICD-10 F50.01: Anorexia nervosa, restricting type
Psychotherapy, 45 minutes billed with Anorexia nervosa, restricting type — documentation requirements, denial reasons, modifiers, and reimbursement context.
CPT Code
90834
Psychotherapy, 45 minutes
ICD-10 Code
F50.01
Anorexia nervosa, restricting type
Compatibility Notes
Used for 45-minute psychotherapy sessions for restricting-type anorexia nervosa. Medical monitoring documentation and treatment team coordination are required. Prior authorization is standard for eating disorder treatment beyond the initial evaluation.
Documentation Required
- ✓Session start and stop times confirming 38–52 minutes
- ✓AN restricting type diagnosis with DSM-5 criteria
- ✓Medical stability documented or medical referral on file
- ✓Treatment team coordination
- ✓CBT-E or FBT approach in treatment plan
- ✓Prior authorization number
Common Denial Reasons
- ✗Missing medical monitoring documentation
- ✗No prior authorization for eating disorder treatment
- ✗Level of care may be deemed insufficient
Applicable Modifiers
Reimbursement Notes
OON UCR $100–$165. Eating disorder parity laws in many states provide additional protections. Document treatment team structure carefully.
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