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Home » Billing & Coding Guides » Psychotherapy Add-On Codes with High-Level E/M: Payer Reimbursement Policy Guide (2026)

Psychotherapy Add-On Codes with High-Level E/M: Payer Reimbursement Policy Guide (2026)

Garvit Chouhan

Head of RCM Delivery, Neolytix | MBA (International Business) · Six Sigma Black Belt (NASBA-US) · LSSGB (KPMG India) | 9+ Years in US Healthcare RCM
  • Updated:
•
Psychotherapy Add-On Codes with High-Level E/M (2026)

Table of Contents

  • Key Takeaways
  • Psychotherapy add-on codes 90833, 90836, and 90838 are billed by prescribers alongside a high-level E/M when both medication management and psychotherapy occur in one encounter. 
  • When a psychotherapy add-on is billed, select the E/M level by medical decision making, not time, because psychotherapy time cannot be counted toward the E/M. 
  • CareSource, Molina, and Blue Shield Promise all deny the add-on billed concurrently with 99204, 99205, 99214, or 99215 unless two significant, non-overlapping services are documented. 
  • The record must show a distinct E/M note supported by MDM and a distinct psychotherapy note with its own start and stop times that do not overlap the E/M. 
  • A denial under these policies is a reimbursement-policy outcome, not automatically a coding error, so a well-documented combination is appealable rather than a reason to downcode. 

When a psychiatrist or psychiatric nurse practitioner provides both medication management and psychotherapy in one visit, the correct coding is a high-level E/M code plus a psychotherapy add-on. It is also one of the fastest-growing denial patterns in behavioral health. A rising number of payers, including CareSource, Molina Healthcare, and Blue Shield Promise, now deny the add-on by default when it is billed with a high-level E/M, on the view that one encounter rarely holds enough separate, non-overlapping time for both. This guide is the full reference for billing that combination correctly: the codes, the one rule that decides most claims, the documentation and time-overlap requirements, a payer-by-payer breakdown, and a pre-submission checklist.

Current as of 2026. Payer policies change and vary by market, so always verify against the specific payer’s current policy. 

The codes, and the twelve combinations

Psychotherapy add-on codes are reported alongside an E/M code when a prescriber performs psychotherapy in addition to the medical evaluation and management work in the same encounter. Per the American Psychiatric Association’s CPT Primer for Psychiatrists, the add-on is chosen by psychotherapy time: 

  • 90833: 16 to 37 minutes of psychotherapy (with E/M) 
  • 90836: 38 to 52 minutes (with E/M) 
  • 90838: 53 minutes or more (with E/M) 

They are add-on codes, so they never appear alone; they attach to a primary E/M code. This guide focuses on the high-level E/M codes most often paired with them and most scrutinized by payers: 99204, 99205, 99214, and 99215. That makes twelve possible combinations, three add-on codes across four E/M codes, and payers apply the same reimbursement logic to all twelve. 

E/M code 

With 90833 

With 90836 

With 90838 

99204 (new, moderate) 

Combo 

Combo 

Combo 

99205 (new, high) 

Combo 

Combo 

Combo 

99214 (established, moderate) 

Combo 

Combo 

Combo 

99215 (established, high) 

Combo 

Combo 

Combo 

Two foundational rules: the add-on codes are only billed by prescribers who can bill E/M (psychiatrists, PMHNPs), not by therapists; and the standalone psychotherapy codes (90832, 90834, 90837) are mutually exclusive with the add-ons, never report both for one encounter. Our guides to CPT code 90837 and CPT code 90834 cover the standalone side.

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The rule that decides most claims: select the E/M by MDM, not time

This is the single most important concept, and it is the root of nearly every denial in this space. Since 2021, an E/M level can be chosen by medical decision making or by total time. But when a psychotherapy add-on is also billed, the time spent on psychotherapy cannot be counted toward the E/M, and the time spent on the E/M cannot be counted toward the psychotherapy. The two clocks are separate. 

So the safe and correct approach is to select the high-level E/M by MDM, and support the add-on by its own documented psychotherapy time. If you select the E/M by time and also bill a time-based psychotherapy add-on, you are implicitly double-counting minutes, which is exactly what payers look for and deny. The add-on does not require modifier 25, since it is designed to be billed with an E/M. 

Documentation and time-overlap requirements

Every payer policy below rests on the same documentation standard. To support a high-level E/M plus a psychotherapy add-on, the record must show two significant, separately identifiable services that do not overlap in time: 

  • A distinct E/M note supporting the level by MDM: the problems addressed, data reviewed, risk, medication management, and the clinical reasoning. 
  • A distinct psychotherapy note: the therapeutic modality, the content, and the psychotherapy time, documented as start and stop times or a clear total, matching the add-on’s range (16 to 37, 38 to 52, or 53 or more minutes). 
  • Confirmation that the two services did not overlap, so the same minutes are not claimed twice. 
  • Interactive complexity (90785) only when its specific criteria are met and documented. 
  • A diagnosis supporting medical necessity. A separate diagnosis for each service is not required, but the documentation must justify both. 

One more technical rule: prolonged E/M service codes (99417, or G2212 for Medicare) may not be reported when a psychotherapy add-on is billed, since the additional time belongs to the psychotherapy code. 

Payer-by-payer breakdown

The three payers in scope share the same core position: they deny the psychotherapy add-on when it is billed concurrently with a high-level E/M for the same patient, provider, and date of service, unless the documentation clearly establishes two substantial, separately identifiable, non-overlapping services. 

Payer 

Policy 

Default action on the combo 

Key to reimbursement 

CareSource 

E/M and Psychotherapy Add-On (state Medicaid reimbursement policy, for example Georgia MCD-PY-1767) 

90833/90836/90838 denied when billed concurrently with 99204/99205/99214/99215 for the same patient, provider, and date of service (by TIN) 

Document two significant, independently identifiable services; E/M time is excluded from psychotherapy time; support the E/M level by MDM 

Molina Healthcare 

PI Payment Policy 47, Psychotherapy Add-On with High Level E/M 

90833/90836/90838 denied when billed concurrently with 99204/99205/99214/99215 for the same patient, provider, and date of service 

Services must be significant and separately identifiable, and the E/M and psychotherapy time must not overlap 

Blue Shield Promise 

PI0061, Psychotherapy with E/M Add-Ons 

90833/90836/90838 denied with high-level E/M, cited as insufficient combined time 

Document psychotherapy start and stop times or total time; the two services must be significant and non-overlapping 

 

Ten-point pre-submission checklist

  1. The provider is a prescriber (psychiatrist, PMHNP) who can bill both E/M and the add-on. Therapists cannot bill add-on codes. 
  2. The E/M level is selected by MDM, not by time, whenever a psychotherapy add-on is billed. 
  3. The add-on code matches the documented psychotherapy time (90833: 16 to 37; 90836: 38 to 52; 90838: 53 or more minutes). 
  4. The E/M and the psychotherapy are documented as two separate, significant, independently identifiable services. 
  5. Psychotherapy start and stop times, or total time, are recorded separately from the E/M. 
  6. The E/M and psychotherapy time do not overlap. 
  7. A standalone psychotherapy code (90832/90834/90837) is not billed with the E/M; the add-on is used instead. 
  8. Prolonged E/M codes (99417 or G2212) are not reported with the add-on. 
  9. Interactive complexity (90785) is added only when its criteria are met and documented. 
  10. The specific payer’s current policy is checked, since several Medicaid managed-care plans deny this combination by default, and medical necessity is supported by the linked diagnoses. 

When the add-on is denied

A denial under these policies is a reimbursement-policy outcome, not automatically a coding error, and it does not mean you should downcode the E/M. If the documentation genuinely supports two separate, non-overlapping services, the denial is appealable with the records that prove it. Our article on billing 90838 with 99215 walks through the appeal logic and the three questions to ask when an add-on is denied. 

The bottom line

Billing a high-level E/M with a psychotherapy add-on is correct coding when a prescriber truly performs both services, but it now sits at the center of a growing payer-denial trend. Select the E/M by MDM, document the psychotherapy time separately and non-overlapping, and check the payer’s policy before you submit. For practices that would rather not track payer-by-payer add-on policies claim by claim, Neolytix has supported healthcare organizations across the United States for over 14 years, with behavioral health coding and denial review built into its medical billing services so these claims are defensible before they go out. 

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This guide reflects Neolytix’s expertise in healthcare revenue cycle management and is intended for educational purposes only. It does not constitute legal or compliance advice. CPT codes and reimbursement rates are periodically updated by the AMA and CMS.

Sources

Frequently Asked Questions

Why do payers deny the psychotherapy add-on with a high-level E/M?

Because a high-complexity E/M already involves substantial time and decision-making, several payers presume one encounter cannot also contain enough separate, non-overlapping time for a psychotherapy add-on. They deny the add-on unless documentation shows two significant, independently identifiable services.

Generally no. The psychotherapy add-on codes are designed to be reported with an E/M, so most payers do not require modifier 25 on the E/M. Confirm the individual payer’s policy, since requirements vary. 

No. The add-on codes are only billed alongside an E/M service, so they are reported by prescribers such as psychiatrists and psychiatric nurse practitioners. Therapists, social workers, and psychologists who cannot bill E/M use the standalone psychotherapy codes instead. 

A separate diagnosis for each service is not required. One supporting diagnosis can cover both, as long as the documentation establishes medical necessity for the E/M and for the psychotherapy as distinct services. 

No. These are payer and market-specific reimbursement policies, and plans like CareSource issue them per state. Always verify the current policy for the specific payer, plan, and market before billing or publishing. 

Reviewed by Ritu Bhatnagar
Ritu Kalsi Bhatnagar — President & COO, Neolytix | 23+ Years in Healthcare RCM & Compliance
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