The Month End Billing Close for a Solo Therapy Practice

Reconcile the Calendar Against Sessions Actually Held

The end of the month is a good time to bring your calendar in line with reality. Start by cross-referencing your electronic health record, scheduling software, or paper calendar with your session notes. Every appointment marked as completed should have a corresponding progress note and, if applicable, a charge. If you use a practice management system, run a report showing all scheduled sessions for the month.

It is not uncommon to find discrepancies. Sometimes a client cancels by phone but the digital calendar was never updated. Other times, you may have fit in a last-minute session that did not get recorded in your system. For each mismatch, update your records to ensure accuracy. This step is crucial: an accurate calendar is the backbone of accurate billing and clean records.

If you see clients in multiple locations, or via both telehealth and in-person appointments, make sure the session location matches what is in your clinical notes. Some insurers require this match for reimbursement, and it will save you time on appeals later.

Keep reading: How to Calculate What a Client Gets Back on a Superbill

Confirm No Shows and Late Cancellations Are Not Billed to Insurance

Most insurance plans do not cover no-show fees or late cancellations. Mark these appointments clearly on your ledger. Do not generate a superbill for these sessions, even if your practice policy allows you to charge a fee directly to the client.

It is helpful to keep a separate log for missed appointments. This can help with clinical tracking and can be useful if a client disputes a cancellation fee. Make sure your policy on missed appointments is consistently applied and clearly communicated to clients at intake. If you use automated reminders or client portals, set a flag for appointments marked as no-shows so you do not accidentally include them in insurance billing.

Verify Every Diagnosis Code Still Reflects the Chart

Before generating any billing documents, review each client's diagnosis code. Check that the code on file matches the most recent clinical assessment and is supported by your documentation. Insurance audits often look for alignment between diagnosis codes and chart notes.

If you have updated a diagnosis during the month, make sure the change is reflected on the billing for subsequent sessions. Double-check the date of onset and any specifiers if you use ICD-10 codes. For long-term clients, review at least quarterly that diagnosis codes are up to date and justified by the most recent session notes.

This is also a good time to review any billing modifiers required for telehealth or add-on services. These codes must match what is documented in your chart. If you are uncertain, consult the latest CPT manual or your state's Medicaid guidance.

Keep reading: Inside a Verification of Benefits Call With a Payer

Match Payments Received to Charges on Every Line

Now, check your payments for the month against your charges. For each client, make sure that all payments, whether from insurance, clients, or both, are correctly posted to the right sessions. Use your deposit records, insurance EOBs (explanations of benefits), and any automated payment systems to trace each dollar received.

Partial payments are common. Sometimes insurance pays less than the contracted rate, or a client pays only a copay and the rest is pending. For each session, mark what has been paid, what is outstanding, and any write-offs. If you receive electronic remittance advice, match these to your ledger line by line.

If you spot unapplied payments or credits, resolve them now. This might mean reaching out to a client about an overpayment or reissuing a claim if insurance denied a charge in error. A clean payment record at month's end makes tax time and year-end reporting much easier.

Generate and Proof the Superbills

Include Correct CPT and Diagnosis Codes

When you create superbills, check that each form includes the correct CPT codes for the services provided. For most therapy sessions, this means codes such as 90834 for a standard individual therapy session or 90837 for longer sessions. Couples or family sessions use different codes.

Make sure the diagnosis code on each superbill matches your clinical chart, as discussed earlier. If a client had more than one diagnosis during the month, separate superbills may be needed for sessions before and after a change.

Verify Client and Provider Information

Ensure that each superbill contains accurate client information: full name, date of birth, and any insurance ID number if required. Double-check your own provider information, including National Provider Identifier (NPI), license number, and practice address. Incomplete or incorrect details can delay reimbursement for your clients.

Proof for Errors Before Sending

Before sending, review each superbill for typos, missing fields, and formatting errors. Pay special attention to session dates and charge amounts. A small mistake can lead to a denied claim or confusion for your client. If you use templates, make sure the fields auto-filled correctly for every bill.

See how SuperbillDesk handles this for mental health

Deliver Securely and Log the Delivery

Superbills often contain protected health information, so delivery must be secure. Use an encrypted email service, secure client portal, or hand-deliver in a sealed envelope. Avoid standard email or text, as these are not HIPAA-compliant for PHI.

Log every delivery. Record the date, method, and recipient for each superbill sent. This protects your practice if a client later claims they did not receive their documentation. Some practice management platforms have automatic logging. If you deliver by hand or mail, keep a simple spreadsheet or paper log.

If a client requests physical copies, store them in a locked file until pick-up. For electronic delivery, verify that the client's contact information is current, and confirm receipt if possible. Consistent documentation of delivery is important for compliance and customer service.

Flag Deductible Resets, Plan Changes, and Fee Increases

The start of a new plan year often means deductible resets for clients. Check your records for clients whose benefits restart in January or another month. Flag these clients so you can alert them if their out-of-pocket costs will increase.

Watch for plan changes. Clients may switch insurance, change employers, or move to a new policy. Update your billing records as soon as you receive new insurance information. If you submit superbills for out-of-network reimbursement, make sure you have the new policy number and group number on file.

If you have updated your own fees, apply the new rates to sessions going forward. Make sure superbills reflect the correct charge amounts. Communicate fee changes to clients in writing and keep a record of the notification. Some states require advance notice of fee changes, so check your local regulations.

File Copies for the Retention Period Your State Requires

Keep copies of all superbills, payment records, and communications for the retention period required by your state. Most states require at least seven years, but some require longer. Store these records securely, whether digitally or on paper.

For electronic records, back up files regularly and use password protection. For paper files, organize by client and year, and use locked storage. If you close your practice or move, make arrangements for secure record transfer or storage for the required period.

Regular organization and archiving save time during audits, legal requests, or client inquiries. At month end, review your filing system and ensure all documents for the month are stored in the correct place.

A structured monthly billing close keeps your practice in good order, supports timely reimbursement for clients, and reduces stress at tax time. For many solo practitioners, tools that automate superbill generation with accurate CPT and diagnosis codes, and secure delivery to clients, can simplify this process and help avoid common billing errors.