7.2 Documentation Integrity & Incident-To Billing

Documentation Integrity & Incident-To Billing

Accurate and legally sound medical records are the foundation of quality patient care and compliant billing. Documentation integrity encompasses how records are created, signed, and modified over time. Furthermore, specific billing rules, like "incident-to" and split/shared visits, rely heavily on precise documentation to justify payment and ensure that services are billed appropriately according to the level of provider involvement.

Documentation Integrity

The medical record is a legal document. Therefore, strict rules govern how entries are made and authenticated to ensure the record is trustworthy and accurately reflects the patient's care journey.

Provider Signature Requirements

Medicare and other payers require that all services provided or ordered be authenticated by the author of the entry. The signature confirms that the provider takes responsibility for the care rendered and the documentation provided.

• Legibility: Handwritten signatures must be legible. If a signature is illegible, a signature log or attestation statement must be maintained to identify the author.
• Electronic Signatures: In modern EHR systems, secure electronic signatures are the standard. These are legally binding. It is a severe compliance violation for providers to share their passwords or allow others to sign on their behalf.
• Timeliness: Entries should be signed promptly after the service is rendered, as dictated by facility policy and state laws. Delayed entries can raise concerns about the accuracy of the recollection of events.
• Auto-Authentication: Auto-authentication (where a system automatically signs a document without the provider's review) is generally not acceptable for Medicare compliance. The provider must review and actively sign the document.

Addenda, Amendments, and Corrections

Errors happen in clinical practice, and providers often need to add information to a record after it has been signed. The rules for modifying a record are strict to maintain its legal integrity and prevent allegations of tampering, especially in the context of an audit or malpractice claim.

1. Never Delete: The original entry must never be deleted, obliterated, or altered in a way that makes it unreadable. In paper records, the standard practice is to draw a single line through the error, so the original text remains visible.
2. Date and Author: The addendum or correction must be clearly dated on the day the change is made, and signed by the person making the change.
3. Reference: The addendum should clearly reference the original entry it is modifying or appending, providing context for the change.
4. Reason: It is best practice to briefly note the reason for the correction (e.g., "Dictation error," "Additional information obtained from family").

Example: An addendum written on Tuesday for a visit that occurred on Monday should state: "Addendum to note of [Monday's Date]: Patient also reported a history of asthma... Signed, Dr. Smith, [Tuesday's Date]."

Incident-To Billing Criteria (42 CFR 410.26)

"Incident-to" billing is a complex Medicare regulation specific to the physician office setting (Place of Service 11). It allows services provided by auxiliary personnel (e.g., Medical Assistants, Nurses) or non-physician practitioners (NPPs, like Physician Assistants or Nurse Practitioners) to be billed under the supervising physician's National Provider Identifier (NPI).

The financial benefit of incident-to billing is significant: the service is reimbursed at 100% of the physician fee schedule, rather than the 85% rate typically applied to NPPs billing under their own NPI. However, the rules are stringent and frequently targeted in audits.

Requirements for Incident-To:

1. Setting: The service must occur in a non-institutional setting, typically a physician's office or clinic. It does not apply in a hospital inpatient or outpatient setting.
2. Initiation of Care: The physician must have initially seen the patient, established the diagnosis, and created the plan of care. Incident-to billing is for follow-up care for an established problem.
3. Subsequent Visits: The auxiliary personnel or NPP must be carrying out the established plan of care. If a new problem arises, or the plan of care needs to be changed, incident-to no longer applies. The physician must evaluate the new problem to re-establish the plan, or the NPP must bill under their own NPI at 85%.
4. Direct Supervision: The supervising physician must provide "direct supervision." This means they must be present in the office suite and immediately available to provide assistance and direction throughout the time the service is being performed. They do not need to be in the exact same room, but they cannot be at the hospital, at home, or unreachable.
5. Employment: The personnel providing the service must be an employee, leased employee, or independent contractor of the physician or the physician's practice.

Split/Shared E/M Visits (2024-2026 Rules)

While incident-to rules apply in the office setting, split (or shared) visits refer to Evaluation and Management (E/M) services provided jointly by a physician and an NPP in an institutional setting (hospital inpatient, hospital outpatient, or emergency department).

Medicare rules for split/shared visits have evolved significantly in recent years. For 2024 and beyond, the service is billed under the NPI of the practitioner who performs the substantive portion of the visit.

Substantive Portion Definition:

The substantive portion can be determined in one of two ways:

1. More than half of the total time: The practitioner who spends more than 50% of the total combined time (face-to-face and non-face-to-face) spent by both practitioners on the date of the encounter.
2. Medical Decision Making (MDM): The practitioner who performs the MDM. To bill based on MDM, the billing practitioner must take responsibility for the MDM and explicitly document their role in the medical record.

If the physician performs the substantive portion, it is billed under the physician's NPI (100% reimbursement). If the NPP performs the substantive portion, it is billed under the NPP's NPI (85% reimbursement). The documentation must clearly delineate the contributions of both practitioners to justify the billing choice.