Modifier 25 in Behavioral Health: When and How

Modifier 25 in Behavioral Health

Modifier 25 (Significant, Separately Identifiable E/M Service) is used in behavioral health when a provider delivers both an E/M service and a therapy session on the same date. The modifier goes on the E/M code (99213, 99214, 99215) to indicate it is a distinct service from the therapy code (90834, 90837). Without modifier 25, the payer bundles the E/M into the therapy and pays only for one service.

When to Use Modifier 25 in BH Settings

1. Psychiatric medication management (99214) on the same day as individual therapy (90837). The prescriber evaluates medication response, adjusts dosing, and the therapist conducts a separate psychotherapy session.
2. Initial psychiatric evaluation (90791) combined with a follow-up E/M visit for a co-occurring medical issue on the same day.
3. Crisis assessment (90791) followed by a brief E/M for medical clearance in the same encounter. Modifier 25 on the E/M indicates the medical evaluation was distinct from the psychiatric evaluation.

Documentation Requirements

The chart must contain two distinct notes: one for the E/M service documenting medical decision-making, exam findings, and medication changes, and one for the therapy session documenting treatment modality, therapeutic goals, and patient response. A single note covering both services is insufficient. Payers audit for separate documentation supporting each billed service.

Common Denials

CO-16 occurs when modifier 25 is missing from the E/M line. CO-97 flags bundling when the payer's contract does not allow same-day E/M and therapy. Appeal with documentation showing distinct services. See behavioral health denial appeals for payer-specific escalation paths.