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Practice Management

Psychiatry Billing: E/M Codes, Add-Ons, and Common Claim Errors

Psychiatry billing is how a psychiatric practice gets paid for evaluation and management (E/M) visits, medication management, and psychotherapy done with medical services. Prescribers bill differently from therapists, so this guide explains how E/M visits and add-on codes work together and which claim errors to avoid.

Clinician working on psychiatry billing at a laptop with a notebook
Psychiatry billing starts with accurate documentation.

How does psychiatry billing work?

A psychiatrist or other prescriber usually bills an E/M code for the visit. The level depends on the medical decision-making or the total time, under the rules in the AMA’s CPT book and each payer’s policy. When psychotherapy is also provided in the same visit, an add-on psychotherapy code may be reported with the E/M code. Our psychiatry billing services guide and CPT code guides go deeper, and the CPT codes glossary defines the terms. Practices we serve are listed on Who We Serve.

E/M visits and psychotherapy add-ons

  • The E/M code describes the medical visit.
  • The add-on psychotherapy code describes the psychotherapy provided with it, and it is reported alongside the E/M code, not alone.
  • Documentation should show the medical work and the psychotherapy separately.
  • Interactive complexity is a separate add-on with its own requirements.

Code descriptors and time rules come from the AMA’s CPT book. Check the current book and each payer’s policy before you bill. Our psychotherapy codes glossary explains the vocabulary.

5 common psychiatry claim errors

  1. Reporting a psychotherapy add-on without separate documentation.
  2. Choosing an E/M level the note does not support.
  3. Billing the wrong provider as rendering provider. See the billing terms glossary.
  4. Missing authorization for a service the plan requires it for. Check it with insurance verification before the visit.
  5. Sending Medicare claims with a private-payer assumption. Medicare claims go to a Medicare Administrative Contractor (what a MAC is, CMS.gov, checked 10/21/26).

Private payers, Medicare, and state rules

Keep them separate. Our practice management guides and billing FAQ help. Private plans set their own rules. Medicare follows federal policy through its MAC. State rules and Medicaid programs vary by state. Our Medicare behavioral health billing guide covers Medicare.

Documentation tips for prescribers

  • Document the medical work and any psychotherapy separately so each service is supported.
  • Follow the AMA CPT rules for the method you use to set the E/M level, and record what supports it.
  • Note why an add-on service was needed.
  • Keep medication lists and problem lists current.

Good notes protect you in an audit and help a billing company send accurate claims.

How MCM South supports psychiatrists

MCM South Medical Billing Service, LLC works only in mental and behavioral health and serves psychotherapists and psychiatrists in solo and medium-size practices. It handles verification, claims, secondary claims, denial follow-up, out-of-network claims, EAP claims, and credentialing. Get a Free Quote or see our services.

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Psychiatry billing FAQ

How is psychiatry billing different from therapy billing?

Prescribers bill E/M visits, sometimes with a psychotherapy add-on code, while therapists bill psychotherapy codes by session length and type.

Can an add-on psychotherapy code be billed alone?

No. An add-on code is reported with a primary service such as an E/M visit, never alone.

Where do I find current code descriptors?

The AMA’s CPT book is the source. Check the current edition and each payer’s policy before billing.

How are Medicare psychiatry claims processed?

Medicare claims are processed by a Medicare Administrative Contractor, and the rules differ from private plans.

Does MCM South bill for psychiatrists?

Yes. MCM South serves psychotherapists and psychiatrists in solo and medium-size practices.

Where MCM South works

MCM South serves practices in our ten currently served states: Georgia, Massachusetts, Connecticut, Texas, Florida, New York, Colorado, Tennessee, North Carolina, and Illinois. Plan rules vary by payer and by state, so check each plan before you bill.