Specialty
Internal Medicine Billing
Internal medicine bills a high volume of evaluation and management encounters, which makes small, systematic coding differences compound faster here than almost anywhere else.
What makes it different
The things that decide whether these claims get paid.
- E/M level selection carries the revenue
- Most of the money is in office visit codes. A practice systematically coding one level below what its documentation supports loses a meaningful share of revenue without a single denial appearing — which is why under-coding is harder to detect than over-coding and more common.
- Chronic care and wellness visits are frequently unbilled
- Chronic care management, transitional care and annual wellness visits are reimbursable and regularly delivered without being billed, because they happen alongside a visit rather than as one.
- High volume means small errors scale
- A one-percent error rate on a handful of monthly procedures is noise. The same rate across hundreds of office visits is a salary.
- Preventive and problem-focused care collide
- When a preventive visit uncovers a problem addressed in the same encounter, both are billable — but only with documentation that separates them clearly. This is one of the most common sources of avoidable denial.
Where the money goes
Four leaks specific to Internal Medicine.
A healthy practice in this specialty collects around 96% of billed charges. Most of the gap below that is made up of these.
- Chronic care management delivered but never billed
- E/M levels coded below what the note supports
- Preventive and problem-focused services bundled when they could be separated
- Annual wellness visits recorded as ordinary office visits
| Measure | Result | Reference |
|---|---|---|
| Collection rate | 96.0%OK | > 95% |
| Days in A/R | 28OK | < 30 |
| Denial rate | 3.0%OK | < 5% |
| A/R over 90 days | 8.0%OK | < 10% |
Illustrative figures — not a client result.
Questions
Asked most often.
Is under-coding really a bigger risk than over-coding?
Financially, usually yes. Over-coding carries audit risk and gets attention. Under-coding carries no risk at all, produces no denial and no flag, and so can continue for years. Both are documentation problems rather than billing problems.
Why do chronic care services go unbilled so often?
Because the work is real but non-visit-based — care coordination between appointments. If nothing in the workflow captures the time, nothing reaches the claim.