CPT 90853 + ICD-10 F42.2: Mixed obsessional thoughts and acts (OCD)
Group psychotherapy billed with Mixed obsessional thoughts and acts (OCD) — documentation requirements, denial reasons, modifiers, and reimbursement context.
CPT Code
90853
Group psychotherapy
ICD-10 Code
F42.2
Mixed obsessional thoughts and acts (OCD)
Compatibility Notes
Group ERP or ACT-based OCD group therapy. Some payers limit group size for OCD groups (typically 4–6 participants) to ensure adequate individual attention during exposures. Per-participant billing required. Y-BOCS should be tracked per patient.
Documentation Required
- ✓Per-participant attendance and OCD diagnosis
- ✓Y-BOCS per participant
- ✓Group ERP or ACT approach documented
- ✓Individual exposure progress noted per participant
Common Denial Reasons
- ✗Group billed as single claim
- ✗Group size too large for evidence-based OCD group format
- ✗No ERP or ACT approach documented
Applicable Modifiers
Reimbursement Notes
OON UCR $50–$90 per participant. OCD group therapy requires more intensive per-participant documentation due to exposure tracking requirements.
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