Telehealth is now a permanent service line rather than a stopgap, and payers audit it like one. Medicare, Medicaid programs and commercial plans each maintain their own lists of covered services, eligible provider types, permitted modalities and documentation elements, and those lists are revised every year. A claim that was acceptable under a temporary flexibility can be a denial, or an overpayment finding, under current rules.
The telehealth billing services challenges that cost practices the most are rarely exotic. They are repeatable mistakes: the wrong place-of-service indicator, an audio-only visit billed as video, a missing consent note, a provider type the payer does not recognize for virtual care. What follows is organized as a list of those mistakes and the red flags that signal them, so a biller or compliance lead can spot each one in a claim sample before a payer does.
Eligibility and location mistakes that void a claim
The first group of errors happens before any code is chosen. If the patient, the provider or the location does not qualify, nothing else on the claim matters.
Patient location and originating site
Payer rules distinguish between a patient at home and a patient at a clinical site, and the claim must reflect where the patient actually was through the place-of-service indicator or modifier combination the payer specifies. Red flag: every telehealth claim in a sample carries the same place-of-service value regardless of the note. A second red flag is a patient located in a state where the provider holds no license; that visit is unbillable.
Provider type and modality
Not every clinician type is eligible to bill every telehealth service, and some services are covered by video only while others are payable audio-only when video is unavailable and the record says so. Red flags include audio-only visits billed with a video-only code, services billed by a provider type the payer excludes for virtual care, and behavioral-health visits without the periodic in-person encounter some payers still require. A generalized anxiety disorder visit (F41.1) delivered by phone is billable for many plans, but only when the audio-only status is documented and reported.
Coding and modifier red flags
Once eligibility is settled, coding errors form the largest denial category. The table lists the ones that recur in almost every audit.
| Mistake | Why it fails | Fix |
|---|---|---|
| Video-only code reported for an audio-only visit | Modality in the note contradicts the code | Use the audio-only indicator the payer requires and document why video was unavailable |
| Telehealth modifier omitted, or applied to an in-person visit | Payer cannot match the service to its telehealth policy | Add a claim edit that checks modality against the modifier before submission |
| Place-of-service value does not match patient location | Reimbursement differs by patient site | Capture patient location at scheduling and pass it to the claim |
| Time-based visit billed without documented time | Level of service unsupported | Record start and end times or total minutes in the note |
| Remote monitoring billed without the required days of data | Service threshold not met | Track data days per patient per month before billing |
The last row deserves emphasis because remote monitoring programs, for conditions such as type 2 diabetes with hyperglycemia (E11.65) or obstructive sleep apnea (G47.33), are billed monthly and audited on data completeness rather than on a visit. The Telehealth Billing 2026: New Modifiers, Virtual Consult Codes & Medicare Updates summarizes the current modifier and code landscape these edits should be built against.
Documentation gaps auditors look for
Telehealth notes are audited for elements that in-person notes never needed. The recurring gaps are a missing statement of patient consent to a virtual visit, no record of the modality used, no patient location, no provider location, and no note of who else was present. Time-based services need documented time, and audio-only services need a sentence explaining why video was not used.
Red flags in a chart sample include templated language that is identical across every visit, consent captured once years ago and never renewed where the payer requires it annually, and notes describing an examination that could not have been performed remotely. A routine wellness discussion coded as a general adult medical examination without abnormal findings (Z00.00) is a frequent example: components that require hands-on examination cannot be billed as if they were completed by video.
A documentation checklist embedded in the telehealth visit template, rather than a training memo, is the most reliable fix, because it makes the missing element visible to the clinician before the note is signed.
Payer-policy and compliance red flags
The final group of mistakes comes from treating all payers alike. Medicare's covered-service list, provider eligibility and geographic rules differ from state Medicaid programs, which differ again from commercial plans, and parity laws vary by state. Red flags: a single telehealth fee schedule applied to every payer, no record of each payer's current policy date, and denials that cluster around one plan after a policy change no one tracked. The CMS Telehealth Billing Guidelines 2026: Complete Medicare Policy & Reimbursement Guide is the reference for the Medicare side of that comparison.
Compliance risks are sharper in behavioral health and substance use treatment, where prescribing controlled medications by telehealth, supervision of non-physician clinicians and in-person visit requirements are all regulated. Telehealth in SUD Treatment: Billing for Virtual Care Services sets out those requirements in detail. Practices without the capacity to track policy changes across payers often fold telehealth into a broader revenue cycle management engagement so that payer-policy monitoring is someone's explicit job.
What this means for telehealth practices
For a telehealth practice the pattern is clear: most lost revenue traces to a handful of repeatable mistakes that a pre-submission edit and a documentation template would catch. Reviewing a sample of claims against the red flags above, payer by payer, is the fastest way to find which ones apply. 24/7 Medical Billing Services runs its telehealth billing services with those edits built in, supported by a dedicated account manager, a free 360° reporting dashboard and a HIPAA- and SOC 2-compliant workflow, managing revenue cycles since 2005. Clients see denials down by up to 40%, and claims are scrubbed and filed within 24 hours, so a modality or place-of-service mismatch is caught before the payer sees it.
Frequently asked questions
What are the most common telehealth billing mistakes?
The most frequent are place-of-service values that do not match the patient's location, video codes reported for audio-only visits, missing or misapplied telehealth modifiers, absent consent and modality documentation, and remote monitoring billed before the required days of data are collected. Each is detectable with a claim edit or a template.
What red flags suggest a telehealth claim will be audited?
Identical templated notes across visits, the same place-of-service value on every claim, time-based services with no documented time, examinations described that could not be performed remotely, and visits billed by provider types the payer does not recognize for telehealth all attract payer attention and are simple to spot in a chart sample.
Can audio-only telehealth visits still be billed?
Many payers cover audio-only visits for specific services, particularly behavioral health, when video is unavailable or the patient cannot use it. The note must state that the visit was audio-only and why, and the claim must carry the indicator the payer requires. Billing an audio-only visit with a video-only code is a common denial.
Does the patient's location affect telehealth reimbursement?
Yes. Payers distinguish between a patient at home and a patient at a clinical site, and payment and coding differ accordingly. The provider must also be licensed in the state where the patient is located at the time of the visit. Capturing patient location at scheduling and passing it to the claim prevents both problems.
How often do telehealth billing rules change?
Medicare updates its telehealth covered-service list and policies annually, and commercial plans and state Medicaid programs revise their rules on their own schedules. Practices should record the policy date for each payer, review changes at least yearly and update claim edits and documentation templates whenever a payer publishes a revision.
Ready to find the telehealth red flags in your own claims?
Send a month of telehealth claims and a handful of visit notes, and the 24/7 Medical Billing Services team will review them against the mistakes and red flags above, payer by payer, and return a written findings report. The review is free, carries no obligation, and reflects the same process that keeps clients at a ~99% first-pass clean-claim rate with 98% client retention. Most practices learn which two or three edits would recover the most revenue.
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