90834 CPT code: psychotherapy 45 minutes
CPT 90834 covers about 45 minutes of individual psychotherapy. Denials mirror 90837: visit limits, prior auth, and medical necessity. Document time and clinical need when appealing parity or necessity denials.
Mid-length therapy session code between 90832 and 90837.
Code search and filter
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| Code | Description | When used | Billable / notes |
|---|---|---|---|
| 90834 | Psychotherapy, 45 minutes | About 45 minutes of individual therapy. | Timed psychotherapy code. |
| 90837 | Psychotherapy, 60 minutes | Longer sessions when time is documented. | Billable with time logs. |
Check my denial
Pick the closest denial type to see how to respond on this code page.
Not medically necessary
Include safety assessment when discontinuing care would increase risk.
Also try denial code lookup for exact CARC/RARC text from your EOB.
Common ICD-10 pairings
- See clinician note — Primary diagnosis on claim
Documentation checklist
- Operative or visit note for date of service
- Order/referral if required by plan
- Prior authorization number if applicable
- Proof of medical necessity addressing denial reason
- Correct CPT and ICD-10 pairing on claim
Top denial reasons and how to beat each one
Visit cap
Include safety assessment when discontinuing care would increase risk.
Not medically necessary
Include safety assessment when discontinuing care would increase risk.
Non-covered telehealth platform
Include safety assessment when discontinuing care would increase risk.
Sample appeal paragraph
I appeal the denial of CPT 90834 on [date of service]. The attached record shows [clinical indication]. The denial reason stated [reason] is not supported because [evidence]. Please reprocess this claim.
Step therapy and visit limits
Check your plan for visit limits, site-of-service rules, and step-therapy requirements that apply to this procedure code.
Medicare LCD / coverage notes
Search CMS Medicare Coverage Database for NCDs/LCDs mentioning this service category; cite active policy for your MAC when appealing Medicare denials.
Related CPT codes
- 90837 — 60-minute psychotherapy
Typical use
Weekly or biweekly outpatient behavioral health visits.
Cost and allowed amounts
Behavioral health copays may differ from medical copays under federal parity rules for many plans.
How this CPT code appears on claims and EOBs
90834 is reported on professional or facility claims when documentation supports the service description. Payers compare the billed code to the medical record, authorization files, and plan benefit limits. When the allowed amount is zero or patient responsibility equals the full charge, read the remark and CARC codes before you pay the provider's full statement.
Step-by-step appeal workflow for a 90834 denial
First, request the written adverse benefit determination if you only received a verbal explanation. Second, match the denial reason — medical necessity, prior authorization, frequency limit, downcoding, or network — to the evidence you need. Third, draft a letter with the free appeal generator citing claim number, date of service, and 90834. Fourth, attach visit notes, imaging reports, or therapy logs that answer the payer's stated reason. Fifth, file through the portal or fax on your notice and keep confirmation. If the service is imaging or therapy, consider the MRI or medical necessity specialty tools for tailored language.
Documentation that supports medical necessity
For 90834 Psychotherapy 45 Minutes, insurers often expect diagnosis codes, duration of symptoms, prior treatments tried, and objective findings. Parity rules may apply when mental health services are denied more restrictively than medical services with similar complexity. Do not assume one paragraph from the patient overturns the denial — payer reviewers look for clinician documentation.
What to do after you file
Watch for additional information requests; missing them can uphold the denial without reviewing your clinical argument. If internal appeal fails, read your notice for external review rights (many ACA and fully insured plans) or Medicare/Medicaid levels if applicable. AppealFlow's Appeal Pack can organize exhibits, but it does not file on your behalf or provide legal advice.
How payers review professional and facility claims
After your clinician submits a claim, the payer runs edits for authorization, medical necessity, coding consistency, and benefit limits. The allowed amount on your Explanation of Benefits may be lower than the provider charge even when the service is covered. When payment is zero, identify whether the issue is clinical (CO-50), administrative (CO-16, CO-197), or patient cost-sharing (PR codes) before you choose an appeal strategy.
Regulatory context (not legal advice)
Many group health plans must provide written adverse benefit determinations and appeal rights under 29 CFR 2560.503-1. Many individual and small-group plans must provide internal and external appeal rights consistent with 45 CFR 147.136. Medicare and Medicaid use CMS and state fair-hearing processes instead. Your notice tells you which rules apply to your coverage.
Paid pack option
If you want a checklist, deadline worksheet, and exhibit list in one download, see the Appeal Pack on /pricing. AppealFlow prepares documents; you file them and review all facts before submission.