Montana Medical Records Retention Requirements: How Long Healthcare Providers Must Keep Patient Records

Knowing your patient record retention periods is essential to medical record maintenance compliance in Montana. This guide explains exactly how long hospitals, physicians, imaging departments, obstetrical services, and behavioral health inpatient facilities must retain records—and how to manage core records, payer overlays, health information authorizations, and healthcare facility record closure.

Hospital Medical Records Retention

Minimum timelines you must meet

• Adults: Retain the entire hospital medical record for at least 10 years after the date of discharge or death.
• Minors: Retain the entire record for at least 10 years after the patient reaches the age of majority (18) or dies, whichever occurs first. Practically, a newborn’s chart is kept until at least age 28 unless the child dies earlier.

Scope of the “entire medical record”

The hospital record includes all documentation created during the episode of care—clinical notes, orders, consents, diagnostic reports, nursing documentation, operative notes, pathology, and discharge summaries—regardless of storage medium (paper, microfilm, or electronic).

After the minimum period

After the 10-year minimum, hospitals may abridge a chart to a core medical record (described below) to reduce storage while preserving the legal and clinical essence of the record.

Physician Medical Records Retention

What Montana requires and what practice risk demands

Montana law does not set a single numeric minimum for all private physician offices. If you operate as a licensed health care facility (for example, an ambulatory surgery center or rural health clinic), the facility rule below applies. Otherwise, align your policy to the longest applicable obligation among payer contracts, malpractice guidance, and federal overlays.

Actionable baseline for clinics

• Medicaid Medicare retention requirements: If you bill Montana Medicaid, keep records at least 6 years and 3 months from the date of service; many Medicare agreements and audits expect multi‑year access as well.
• Risk-managed standard: Keep adult charts at least 7 years from the last encounter; for minors, retain at least until age 25. Many practices extend to 10 years to mirror hospital standards.
• HIPAA administrative files: Retain health information authorization forms, privacy policies, notices, complaint logs, and related compliance documentation for at least 6 years from creation or last effective date.

Diagnostic Imaging and Tracings Retention

Hospitals

• Diagnostic film retention: Maintain imaging films and electrodiagnostic tracings (for example, ECG, EEG) for at least 5 years.
• Interpretations: Keep radiology and cardiology reports for the same period as the patient’s medical record (10 years for adults; for minors, at least 10 years after majority or earlier death).

Non‑hospital imaging settings

Licensed non‑hospital facilities follow the 6‑year facility rule for patient charts (see below). As a best practice, preserve raw images for at least 5 years and the interpretive reports for the full chart retention window applied to the patient.

Obstetrical and Newborn Records Retention

Record content you must create

For each maternity patient, you must maintain an obstetrical record that includes the prenatal record, labor notes, obstetrical anesthesia notes, and the delivery record. For each newborn, create a separate record capturing post‑birth observations, delivery room care, examinations, vitals, feeding type, required newborn screenings, and to whom the newborn was released.

Retention periods

• Maternal record: Retain as part of the hospital chart for at least 10 years after discharge.
• Newborn record: Retain as the child’s chart for at least 10 years after the child reaches age 18 (effectively until age 28 unless earlier death).

Monitoring strips and perinatal diagnostics should be managed under your diagnostic records policy; ensure reports are preserved with the legal medical record for the full retention period.

Core Medical Records Management

When and how to abridge to a core record

After the minimum retention period (10 years for hospitals; 6 years for non‑hospital facilities), a hospital may reduce the chart to a core medical record. The core record should be kept permanently, but at a minimum it must be retained for at least 10 additional years beyond the initial period.

What a core record includes

• Patient identifiers (name, prior name if relevant, address, DOB, sex, and, if available, SSN)
• Medical history and physical examination report
• Consultation reports, operative reports, and pathology reports
• Discharge summary (or a final progress note if no discharge summary exists)
• Autopsy findings, if any
• Required obstetrical elements for maternity patients and newborn elements for infants

HIPAA and authorizations

For medical record maintenance compliance, retain health information authorization forms and all HIPAA Privacy/Security Rule documentation for at least 6 years. This requirement is separate from clinical chart retention and applies to policies, notices, complaint logs, and business associate documentation.

Medicaid Medicare retention requirements

• Montana Medicaid: Keep records at least 6 years and 3 months from the date of service and longer if a dispute or audit is pending.
• Medicare: Retention expectations may vary by participation and contract; many providers align with a 7–10 year window to satisfy audit access, cost report support, and plan obligations.

Healthcare facility record closure

If your facility closes, designate a records custodian, document custody transfer in writing, maintain an index for retrieval, notify patients how to request records, and preserve charts for the full remaining retention period. Ensure storage and destruction methods meet confidentiality and security standards.

Record Retention for Other Health Care Facilities

Minimum standard for licensed non‑hospital facilities

Licensed health care facilities other than hospitals (for example, ambulatory surgery centers, outpatient treatment centers, home health or hospice agencies, and similar settings) must retain each patient’s medical record for no less than 6 years following discharge or death. Plan for secure storage and access if a facility closure occurs.

Overlay obligations still apply

Where payer or program rules (such as Medicaid) require longer retention, follow the longest applicable requirement. Align diagnostic film retention and report preservation with clinical need and contractual duties.

Behavioral Health Inpatient Facilities Records Retention

Minimum retention for behavioral health clinical records

Behavioral Health Inpatient Facilities must retain clinical records for at least 5 years after discharge or death. If the facility participates in Medicaid or Medicare, apply the longer period required by those programs, ensuring behavioral health clinical records remain complete, secure, and accessible for audit or patient access.

Because many behavioral health encounters involve prolonged courses of care, facilities often adopt a 7–10 year internal standard to align with payer audits and risk management best practices.

FAQs

What is the minimum retention period for hospital medical records in Montana?

Hospitals must keep the entire medical record for at least 10 years after discharge or death. For minors, keep the record for at least 10 years after the patient reaches age 18 (or earlier death), which effectively means until at least age 28 for most children.

How long must physicians keep patient records in Montana?

There is no single statewide number for all private physician offices. As a practical baseline, retain adult charts at least 7 years from the last visit, keep minor charts until at least age 25, preserve HIPAA authorizations and privacy documentation for 6 years, and, if you bill Montana Medicaid, maintain records at least 6 years and 3 months from the date of service. Always follow the longest applicable requirement.

What are the retention requirements for diagnostic imaging in Montana?

In hospitals, keep imaging films and electrodiagnostic tracings for at least 5 years, and retain interpretive reports for the full medical record period (10 years for adults; for minors, 10 years after majority or earlier death). Non‑hospital facilities follow the 6‑year chart rule unless a longer period is required by contract or payer.

How is core medical record retention managed in Montana healthcare facilities?

After meeting the minimum retention period (10 years for hospitals; 6 years for other licensed facilities), a hospital may abridge the chart to a core medical record that captures identifiers, history and physical, consults, operative and pathology reports, discharge summary or final note, autopsy findings, and required obstetrical/newborn elements. The core record should be kept permanently but must be retained at least 10 additional years beyond the initial period.