CPT code 90785: Interactive complexity (add-on)

When to use 90785

• Communication among the people in the session (high anxiety, reactivity, repeated questions, or disagreement) makes the service harder to deliver
• A caregiver's emotions or behavior get in the way of carrying out the treatment plan
• A sentinel event, such as suspected abuse, leads to a mandated report and a discussion of it in the session
• Play equipment, other devices, or an interpreter are needed because the client hasn't developed, or has lost, the language skills to communicate directly

What to document

• Which interactive complexity factor was present
• How it affected the session and what you did about it
• The primary service it was added to, with that service's own documentation

Common reasons 90785 gets denied

• Billed alone, or with a code it can't attach to, such as crisis psychotherapy (90839, 90840) or family therapy (90846, 90847)
• Billed only because an interpreter or translator was used. CMS guidance says interpretation alone doesn't qualify
• Added to every session for a client by default instead of when a factor was actually present

Billing 90785 by telehealth

The CPT code stays the same when you see a client by video or phone. For Medicare, the place of service changes. Use 10 when the client is at home and 02 when they are somewhere else, such as a clinic. Add modifier 93 when the session was audio-only. Commercial plans and Medicaid set their own rules, and many of them also want modifier 95 on video sessions, so check each payer's telehealth policy.

Medicare covers mental health telehealth in the client's home permanently, wherever the client lives. Through 2027 it pays for audio-only sessions with no extra conditions. From January 1, 2028, audio-only needs a client who can't use video or doesn't agree to it. In 2028 Medicare also starts requiring an in-person visit within 6 months before a client's first mental health telehealth session, then one every 12 months. Clients who start telehealth before 2028 only need the yearly visit. The CMS telehealth page has the current Medicare rules.

How much does 90785 pay in 2026?

Medicare, national non-QP

$14.70

Typical commercial range

$16 to $22

• As an add-on, 90785 is paid on top of the code it's billed with, never on its own.
• The commercial range is 110 to 150% of Medicare. Real contracts run from below 80% to above 200%.
• Medicare pays master's-level clinicians (LCSW, LMFT, LPC) about 75% of the listed amount.
• Your locality's geographic adjustment (GPCI) moves the rate a little.
• Qualifying APM Participants are paid under a slightly higher conversion factor than the non-QP $33.4009 used here.

Medicare figures checked against the official CMS 2026 Physician Fee Schedule Relative Value Files (RVU26D) on Oct 17, 2026.

Related codes

Frequently asked questions