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Internal Medicine Medical Billing Services

Most internal medicine practices are not over-billing. They are under-coding, and leaving care management unbilled entirely.

Internal medicine rarely loses money to dramatic denials. It loses money to habit: office visits coded a level below what the documentation supports, Medicare wellness visits billed as physicals, and an entire category of care management services that never gets billed at all.

Office visit levels are chosen by decision making or time, not by history and exam

The office visit rules changed and a surprising number of practices still code as though they did not. Level selection for an office or outpatient visit is based on the complexity of medical decision making, or alternatively on total time spent on the date of the encounter — and history and examination no longer drive the level at all. They are documented because they are clinically relevant, not to justify a code.

Physicians trained under the old framework routinely under-code as a result. They see a thin exam in the note and pick a lower level, when the decision making — two chronic conditions with an adjustment to therapy, an independent review of an outside test, a prescription drug management decision — supported a higher one. Total time counts non-face-to-face work on the same day too: reviewing records beforehand, ordering, documenting, coordinating care. We code against what the documentation actually supports in both directions, because under-coding is expensive and over-coding is an audit.

Medicare wellness visits are not physicals

This is the most persistent billing error in primary care. Medicare does not cover a routine annual physical examination. What it covers is the Annual Wellness Visit, which is a structured assessment — health risk assessment, review of medical and family history, current providers and medications, screening for cognitive impairment, a written screening schedule — and is a different service with different codes and its own initial and subsequent versions. There is also a separate one-time preventive visit for new beneficiaries in their first year.

Bill a commercial preventive physical code to Medicare and it denies, and the patient is annoyed to receive a bill for something they were told was free. Bill an Annual Wellness Visit without the required elements documented and it is a repayment risk. Where a problem is addressed at the same visit, the problem-oriented service is separately billable with the appropriate modifier, which is revenue most practices never capture.

Care management: the services nobody bills

Chronic care management, transitional care management, advance care planning and remote monitoring are all separately payable, all clinically routine in internal medicine, and all commonly unbilled. The reason is not that practices object. It is that each has enrollment, consent, time-tracking or timing requirements that nobody set up.

Transitional care management is the clearest example. It requires interactive contact with the patient within two business days of discharge and a face-to-face visit within seven or fourteen days depending on complexity. Practices do this work constantly for patients coming out of the hospital and bill it as an ordinary office visit. Chronic care management requires patient consent, a qualifying set of chronic conditions and documented clinical staff time each calendar month. These are workflow problems more than billing problems, and they are worth setting up properly.

Preventive screenings have frequencies, and they are enforced

Screening services are covered at defined intervals, and a claim submitted early denies as a frequency edit rather than as an error. Practices lose the revenue and often absorb it rather than rebilling when the patient becomes eligible. The reverse also happens: screenings performed and simply never charged.

We track eligibility dates per patient per service so screenings are billed when they are payable, and we make sure a screening that converts to a diagnostic service during the encounter is coded and modified correctly — a frequent and avoidable denial.

Advanced practice providers and how their visits are billed

Practices employing nurse practitioners and physician assistants have to decide, per visit, whose number the claim goes out under, and the rules are specific. Billing an advanced practice provider's visit under a physician's number requires supervision conditions that are genuinely met, and billing it that way when they are not is a repayment exposure rather than a coding preference.

We map this per payer and per setting, and we make sure every provider is credentialed and enrolled before their schedule fills. Credentialing is included at no extra charge. See credentialing and the credentialing guide.

Documentation that reflects the patient's actual burden of illness

Internal medicine panels are full of patients with multiple chronic conditions, and those conditions have to be documented and coded each year to be reflected anywhere. Practices in value-based or risk-bearing arrangements are measured on it, and under-documentation costs them directly.

Claims go out within 24 hours, denials are worked within 48 hours, insurance aging is worked at 25 to 30 days, and our clean-claim rate is 98%. Verification, coding, credentialing and monthly Practice Performance Reports are included. See coding and audits and revenue cycle management.

Why practices choose Synergy for internal medicine billing

A 98% clean-claim rate, claims submitted within 24 hours, denials worked within 48 hours, free provider credentialing, and transparent monthly reporting — with a 30-day free trial and a 90-day money-back guarantee.


Good to know

Frequently asked questions

How is an office visit level selected now?

By the complexity of medical decision making, or alternatively by total time spent on the date of the encounter. History and examination no longer determine the level; they are documented for clinical reasons. Total time includes non-face-to-face work performed the same day, such as reviewing records beforehand, ordering, documenting and coordinating care. Physicians trained under the older framework tend to under-code because they judge the level from the thinness of the exam rather than from the decision making.

What is the difference between a Medicare Annual Wellness Visit and a physical?

They are different services. Medicare does not cover a routine annual physical examination. The Annual Wellness Visit is a structured assessment covering health risk, medical and family history, current providers and medications, cognitive screening and a written screening schedule, with separate codes for the initial and subsequent versions plus a distinct one-time visit for new beneficiaries. Billing a commercial preventive physical code to Medicare denies, and billing a wellness visit without the required elements documented is a repayment risk.

Can we bill a problem visit on the same day as a wellness visit?

Yes, when a problem was genuinely addressed beyond the wellness assessment. The problem-oriented service is reported separately with the appropriate modifier, and the documentation has to show work distinct from the wellness visit elements. This is one of the most commonly missed charges in primary care, and it is legitimate revenue for work the practice is already doing.

We never bill chronic or transitional care management. Should we?

Almost certainly. Both cover work internal medicine practices already do. Transitional care management requires interactive contact with the patient within two business days of discharge and a face-to-face visit within seven or fourteen days depending on complexity, and most practices do exactly this and bill it as an ordinary office visit. Chronic care management requires patient consent, qualifying chronic conditions and documented clinical staff time each calendar month. They are workflow set-ups more than billing changes.

How do we know whether our practice is under-coding?

Look at your distribution of visit levels against the complexity of your actual panel, and compare it to what the documentation would support on review. That is part of a free practice audit: we sample encounters, code them independently against current rules, and show you where the documentation supported a higher level and where it did not support the level billed. Both directions matter, because one costs revenue and the other creates audit exposure.

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