CPT 90853 + ICD-10 F34.1: Dysthymic disorder (persistent depressive disorder)
Group psychotherapy billed with Dysthymic disorder (persistent depressive disorder) — documentation requirements, denial reasons, modifiers, and reimbursement context.
CPT Code
90853
Group psychotherapy
ICD-10 Code
F34.1
Dysthymic disorder (persistent depressive disorder)
Common Modifiers
Compatibility Notes
Group therapy for PDD — behavioral activation groups, interpersonal therapy groups, and CBASP groups may be appropriate for persistent depressive disorder. Per-participant billing required. Most payers accept this for outpatient group therapy.
Documentation Required
- ✓Per-participant attendance and PDD diagnosis
- ✓Chronic depressive course confirmed (2+ years) per participant
- ✓Group content and therapeutic approach
- ✓PHQ-9 per participant tracked over time
Common Denial Reasons
- ✗PDD duration not confirmed per participant
- ✗Group billed as single claim
- ✗Notes lack individualized participant observations
Applicable Modifiers
Reimbursement Notes
OON UCR $50–$90 per participant. PDD group therapy is covered under mental health parity; document chronic course per participant.
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