> [llms.txt](https://getlemma.com/llms.txt)

# Banking for ambulatory surgery center revenue

## Two entities, two payer contracts, one roof

Modern GI, ophthalmology, and [orthopedic platforms](/orthopedics) typically operate an ambulatory surgery center alongside the clinic, the two-entity model that [multi-entity banking for a facility-and-clinic structure](/mso-banking) is built around. The clinic bills office-based payer contracts. The ASC bills facility payer contracts. Same patient, same visit, two distinct revenue streams requiring proper routing.

When banking systems commingle ASC and clinic revenue, payer reporting becomes inaccurate, tax filings grow unnecessarily complex, and audit teams perform manual reconciliation work that technology should handle.

## The architecture that separates them cleanly

The recommended structure uses three layers per location:

- **Clinic revenue account** — receives office-based EFTs and lockbox checks; payer enrollments for the office NPI route here with reconciliation matched against clinic encounters
- **ASC revenue account** — receives facility-based EFTs and lockbox checks; payer enrollments for the ASC NPI route here with reconciliation matched against ASC cases
- **Operating account** — disburses payroll, vendor payments, and shared overhead; both revenue accounts sweep into the operating account on a defined schedule with allocation rules documented in the management services agreement

## Why this matters at audit and acquisition

Two critical scenarios demonstrate the value of separation:

**Payer audit:** Facility billing is on a different fee schedule than office billing. Banking documentation showing deposits landing in the correct ASC account strengthens audit defense, a pattern detailed in our [ASC banking checklist for ophthalmology platforms](/provider-guides/ophthalmology-asc-banking-checklist).

**Transaction preparation:** During acquisition or sponsor engagement, diligence teams require separate ASC-level revenue and margin visibility, potentially reducing Q&A timelines by weeks.

## The allocation question

Shared overhead requires allocation between clinic and ASC using a defensible formula documented in the management services agreement, not the banking layer, the same allocation logic used across [multi-modality ophthalmology platforms](/provider-guides/multi-modality-ophthalmology-banking). Virtual accounts simplify intercompany transfers to one click, whereas separate banks require wires and dual reconciliation entries.

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