Can nurse practitioners bill 90792?

Yes. 90792 is billable by any clinician licensed to provide the medical services it includes — physicians, nurse practitioners, physician assistants and clinical nurse specialists — within the scope of their license and the payer’s credentialing. Some Medicaid programs restrict 90792 to specific provider types; check the state manual.

Can I bill 90833 or another psychotherapy code with 90792?

No. CPT does not allow psychotherapy services (90832–90838) or crisis codes (90839, 90840) to be reported on the same day as 90791 or 90792. The only add-on that attaches to the diagnostic evaluation codes is 90785, interactive complexity. If you need to bill psychotherapy at the first visit, use a new-patient E/M code with the psychotherapy add-on instead.

How often can 90791 or 90792 be billed for the same patient?

Once per day, and most payers expect one diagnostic evaluation per clinician per episode of care. Many Medicare contractors limit the codes to once per year per clinician unless a new episode or a significant change in clinical status justifies a re-evaluation, and commercial payers vary. Document the reason whenever you repeat the code.

Does 90785 add time or pay for a difficult patient?

Neither. Interactive complexity has no time component and is not about severity, diagnostic difficulty or an uncooperative adult. It reports specific communication factors — a third party whose behavior complicates care, a mandated-report disclosure, or the need for play equipment, a device or an interpreter — that were present and documented.

Can 90785 be billed with 99214?

Not with the E/M alone. 90785 can be reported when a psychotherapy add-on (90833, 90836 or 90838) is also reported with the E/M, and the complexity factor relates to the psychotherapy. It cannot be attached to an E/M-only medication-management visit.

90791 vs 90792 and 90785 Interactive Complexity

90791 vs 90792: the difference

Both codes describe a psychiatric diagnostic evaluation: a complete history, a mental status examination, a diagnosis and a set of recommendations, typically at the first visit or at re-evaluation when the clinical picture has changed. Neither has a time requirement. The difference is the medical services component.

	90791 — Psychiatric diagnostic evaluation	90792 — Psychiatric diagnostic evaluation with medical services
Who can bill	Any licensed mental health clinician credentialed by the payer: psychologists, LCSWs, LPCs, LMFTs, and prescribers who choose not to bill the medical component	Clinicians licensed to provide medical services: MD/DO, NP, PA, CNS (and prescribing psychologists where state law permits)
Includes	Chief complaint, HPI, psychiatric, substance, family, social and developmental history, MSE, risk assessment, diagnosis, treatment recommendations	Everything in 90791, plus medical history and review of systems, current medications and allergies, pertinent physical exam elements (vitals, observation for tremor or abnormal movements), lab ordering or review, and prescribing or medication decisions with the reasoning
Time	None required; document the duration anyway	None required; document the duration anyway
Add-ons allowed	90785 interactive complexity only	90785 interactive complexity only
Not on the same day	Psychotherapy (90832–90838), crisis codes (90839, 90840), E/M by the same clinician	Psychotherapy (90832–90838), crisis codes (90839, 90840), E/M by the same clinician
Frequency	Once per day; most payers expect one per clinician per episode of care, with re-evaluation justified in the note	Same
Relative value	Lower — see the current CMS Physician Fee Schedule	Higher, reflecting the medical component — see the current schedule

Two consequences follow. A prescriber who bills 90792 must actually document medical services; an evaluation that contains no medication, medical history or lab decision is a 90791 regardless of the clinician’s license. And a non-prescribing clinician cannot bill 90792 by including a medication list, because listing medications is not providing a medical service.

What must be documented

Payers do not publish a checklist for 90791/90792 the way the E/M guidelines define MDM, but Medicare contractor policies and commercial audits look for the same elements. Use the psychiatric intake template for the full structure; the list below is what has to be present.

For 90791 and 90792:

Chief complaint and reason for referral, with the referral source
History of present illness with onset, course, symptoms by domain, function and treatment to date
Past psychiatric history: diagnoses, hospitalizations, suicide attempts and self-harm, outpatient treatment, medication trials
Substance use history, family psychiatric history, social and developmental history
A complete mental status examination (MSE examples)
Risk assessment with SI/HI as separate facts and a safety plan where indicated
DSM-5-TR diagnoses with ICD-10-CM codes, a formulation, and treatment recommendations
Who was present (patient, family, interpreter) and, for telehealth, the modality and the patient’s consent

Additionally for 90792:

Medical history and a pertinent review of systems, including conditions that mimic or complicate psychiatric illness
Current non-psychiatric medications, supplements and allergies
Pertinent physical exam elements: vitals if available, weight, observation for tremor, rigidity or abnormal movements; AIMS when an antipsychotic is on board
Labs ordered or reviewed with the reason (baseline metabolic panel before an antipsychotic, TSH in new depression, lithium level, pregnancy test where relevant)
The medication decision — start, continue, change or defer — with the rationale, the alternatives discussed and informed consent documented

When 90792 fits, and when a new-patient E/M is the better code

A prescriber’s first visit can be reported either as 90792 or as a new-patient office E/M (99204 or 99205, selected by MDM or by time). Both are legitimate; they differ in what they allow on the same day and how they are valued.

	90792	New-patient E/M (99204 / 99205)
Level selection	Single code; no level, no time threshold	MDM (moderate → 99204, high → 99205) or total time on the date of service (45 minutes or more → 99204, 60 or more → 99205)
Psychotherapy same day	Not allowed	Allowed with 90833 / 90836 / 90838; E/M then selected by MDM
Interactive complexity	90785 allowed	Only when a psychotherapy add-on is also reported
Prolonged services	Not applicable	99417 / G2212 by payer, when time selects the level
New vs established	Irrelevant — a diagnostic evaluation can be reported for an established patient when clinically indicated	New-patient codes require no professional service from you or a same-specialty colleague in your group in the prior three years; otherwise use 99212–99215
Best fit	A comprehensive diagnostic evaluation with a medication decision and no psychotherapy; re-evaluation of an established patient after a significant change or a long gap	A first visit that is primarily medication-focused with a psychotherapy component; a long evaluation where time and prolonged services capture the work; a patient transferred within your group who is “established” for E/M purposes but can be evaluated either way

The practical test is what the visit was. If you performed a full diagnostic evaluation and made a medication decision, 90792 describes it and does not require you to justify a level. If the visit was a long one, or you delivered a distinct psychotherapy intervention, a new-patient E/M with the appropriate add-ons may describe the work more completely. Whichever you choose, the note must contain the elements for that code — a 99205 by time needs the total minutes and what they included; a 90792 needs the medical services. The E/M guide covers the MDM and time rules.

90785: interactive complexity

Interactive complexity is an add-on for communication factors that complicate delivery of a psychiatric service. It is most often appropriate with children, with patients who have an intellectual or developmental disability, and when a third party is required to communicate. It is not about the severity of the illness, the number of diagnoses, or an adult who is angry or reluctant.

One or more of four factors must be present and documented:

Maladaptive communication among participants — high anxiety, high reactivity, repeated questions or disagreement among the people in the room (for example, parents contradicting each other or the patient) that complicates delivery of care.
Caregiver emotions or behaviors that interfere with the caregiver’s understanding of, and ability to assist with, the treatment plan.
Evidence or disclosure of a sentinel event and a mandated report to a third party — for example, disclosure of abuse or neglect with a report to the state agency — and discussion of the event or the report with the patient and other participants during the visit.
Use of play equipment, other physical devices, an interpreter or a translator to overcome barriers to interaction with a patient who is not fluent in the same language, or who has not developed or has lost the expressive or receptive language skills to communicate with you in typical language.

It can be reported with: 90791, 90792, individual psychotherapy 90832, 90834, 90837, the psychotherapy add-ons 90833, 90836, 90838 when they accompany an E/M, and group psychotherapy 90853.

It cannot be reported with: an E/M service alone; psychotherapy for crisis (90839, 90840); family psychotherapy (90846, 90847) or multiple-family group (90849); or any service where the factor is not documented. It has no time component and does not change the psychotherapy time thresholds; when reported with a psychotherapy add-on and an E/M, the complexity relates to the psychotherapy portion.

Documentation examples

Four synthetic excerpts: a 90792 medical-services block, two encounters that qualify for 90785, and one that does not.

90792 — the medical services component of an initial evaluation:

MEDICAL HISTORY: Hypothyroidism (levothyroxine 75 mcg, last TSH 2.1 four months ago); no seizure, TBI or cardiac history. Denies snoring or witnessed apneas. Not pregnant; using an IUD. CURRENT NON-PSYCHIATRIC MEDICATIONS: levothyroxine 75 mcg daily; ibuprofen PRN (~3×/week). ALLERGIES: penicillin (rash). PERTINENT ROS: see ROS — positive for weight gain 4 kg/6 months, negative for tremor, palpitations, rash. EXAM: BP 126/82, HR 84, BMI 29.1. No tremor, rigidity or abnormal movements observed; gait normal. LABS: CMP, lipid panel, A1c ordered as baseline before antipsychotic augmentation; TSH repeat ordered given weight change. MEDICATION DECISION: Discussed options for augmentation of partial SSRI response — aripiprazole vs bupropion vs increase of sertraline to 200 mg. Patient prefers to avoid further weight gain; chose bupropion XL 150 mg qAM. Reviewed seizure-threshold precautions and insomnia with bupropion; counseled that regular ibuprofen with sertraline raises bleeding risk and advised acetaminophen where possible. Verbal informed consent documented. Follow-up 3 weeks.

90785 with 90792 — factor 1 and factor 2, adolescent evaluation:

INTERACTIVE COMPLEXITY (90785) with 90792: Evaluation of a 15-year-old with both parents present. Parents repeatedly interrupted the patient and each other, disagreed openly about whether symptoms were “real,” and the mother became tearful and left the room twice; the father stated he would not consent to any medication before the assessment was completed. Managed by seeing the patient alone for 25 minutes, then meeting parents separately to explain the findings and the plan; agreed on a written summary for the parent who left. These communication factors substantively complicated delivery of the evaluation.

90785 with 90834 — factor 4, interpreter required:

INTERACTIVE COMPLEXITY (90785) with 90834: Session conducted through a certified medical interpreter (Dari) via video; patient has no English and the clinician no Dari. Trauma-focused CBT content required repeated clarification of idioms for intrusive memories and dissociation; interpreter present for the full 45 minutes. Psychotherapy 45 minutes, TF-CBT, exposure narrative session 3.

Not interactive complexity — a difficult adult visit:

Patient with schizoaffective disorder, guarded and reluctant, declined to discuss medication adherence for the first 15 minutes; no third party present, no language barrier, no mandated report. Reported as 90792 without 90785 — the visit was clinically complex, but no interactive complexity factor was present.

An interactive complexity block you can paste under the evaluation or psychotherapy section:

INTERACTIVE COMPLEXITY (90785) — reported with [90791 / 90792 / 9083x psychotherapy] Qualifying factor: [1 · maladaptive communication among participants / 2 · caregiver emotions or behavior interfering with the treatment plan / 3 · sentinel event with mandated report discussed / 4 · play equipment, device, interpreter or translator required for communication] What occurred: [specific description — who, what behavior or barrier, how it complicated the service] How it was managed: [what you did to deliver the service despite the barrier] Note: interactive complexity reflects communication factors, not diagnostic complexity or severity.

Plain text, no formatting.

Pitfalls

90792 without medical services in the note. The most common downcode on audit. If the evaluation has no medical history, medication decision or lab reasoning, it is a 90791.
90792 billed by a non-prescriber. A medication list copied from the chart is not a medical service.
A psychotherapy add-on with 90791/90792. Not allowed by CPT; the claim will be denied or, worse, paid and recouped. Use a new-patient E/M plus 90833/90836/90838 when psychotherapy is part of the first visit.
E/M and 90792 on the same day by the same clinician. Bundled; bill one or the other.
90792 on every visit. It is a diagnostic evaluation, not a follow-up code. Repeat it only for a documented re-evaluation, and expect frequency limits.
90785 for every child or every “complex” patient. Payers see the pattern in your claims data. Report it only when a factor was present, and document what happened.
90785 attached to an E/M-only visit. It needs a psychotherapy add-on or a diagnostic evaluation code to attach to.
The factor asserted, not described. “Interactive complexity present” is not documentation. Say who, what, and how it complicated the service.

Psynopsis drafts the complete evaluation — history, medication trials, medical history and ROS, exam observations, labs, the medication decision with consent, MSE and risk — and records who was present and whether an interpreter was used, so the elements for 90791, 90792 and 90785 are in the note for your review before you choose the code. See the feature overview, or the workflows for psychiatrists and PMHNPs.

How Psynopsis writes the evaluation

Initial evaluation · draft for review

Psychiatric history Complete · 1 hospitalization

Medical services Meds, allergies, labs ordered, Rx started 90792 elements

MSE 10 domains · cognition tested

Risk Passive SI · safety plan done structured

Third party Interpreter (Spanish) used 90785?

Code Elements support 90792 your call

A 90792-ready initial evaluation, medical elements included.

Psynopsis drafts the full diagnostic evaluation — history across every domain, medication trials, medical history and pertinent ROS, MSE, risk, formulation and a plan with the medication decision and consent — and notes third-party or interpreter involvement when it occurs, for your review before you choose the code.

Draft your next evaluation

Educational content for licensed clinicians about documentation practice. It is not clinical advice and does not replace clinical judgment or your organization’s documentation standards. Examples are synthetic and contain no patient information.

90791 vs 90792 (and when 90785 interactive complexity applies)