What is the ICD-10 code for a no-show appointment?

There is no official, billable ICD-10-CM diagnosis code for a completely missed or "no-show" patient appointment because no medical care or face-to-face encounter occurred.

Internal Tracking and Billing Realities

• Internal Codes: Most medical practices create a custom internal tracking code (such as NOSHOW) in their electronic health record (EHR) or practice management system to log missed visits.
• No Insurance Billing: Because insurance payers only cover actual rendered services, no-show codes are never submitted on a standard insurance claim.
• Patient Fees: If your clinic enforces a missed appointment fee, it must be billed directly to the patient rather than an insurer, and the policy must be clearly outlined in a written agreement signed or acknowledged by the patient in advance.

Related Encounter Codes (Not for No-Shows)

While some coding crosswalk databases list "no show" under broad administrative terms like Z02.9 (Encounter for administrative examinations, unspecified) or Z53.21 (Left without being seen after arriving or triage), these codes apply only when a patient physically arrives at the facility and departs before or during an evaluation—not when a patient fails to show up entirely.

To document a no-show appointment, create a brief, objective entry in the client or patient chart using guidance from resources like AutoNotes and templates on BastionGPT.

Essential Details to Include

• Appointment Information: Record the exact date, scheduled time, service type, expected duration, and format (in-person or telehealth platform).
• Attendance Status: State clearly that the person did not attend or call to cancel. Use neutral, direct phrasing like "Client did not attend the scheduled appointment".
• Outreach Efforts: Document any follow-up actions taken, such as phone calls, portal messages, or waiting a set time for a telehealth connection. Note the exact time, method, and response or outcome.
• Next Steps: Note any required follow-up, scheduling requests, or clinical safety plans based on your practice protocols.

What to Avoid

• No assumptions: Do not guess or project motives (avoid writing things like "client refused care" or "avoiding session" unless explicitly stated).
• No judgment: Keep the language professional and free of critical labels like "noncompliant" or "irresponsible".
• No fake narratives: Avoid writing a full clinical note or detailing an intervention that never actually happened.

No, there is no Current Procedural Terminology (CPT) code for missed or no-show appointments.

Why There Is No Code

• No Service Provided: CPT codes only describe medical services or procedures actually delivered to a patient.
• Not Reimbursable: Insurance companies and government payers like Medicare do not cover or reimburse for missed appointments. Submitting a claim to an insurance payer for a no-show is not allowed.

How to Handle No-Show Fees

• Direct Patient Billing: You can charge a no-show fee directly to the patient, rather than submitting a claim to an insurance.
• Written Policy Required: To charge a patient, your practice must have a clear, written financial policy that patients sign in advance.
• Payer and State Rules: Check local regulations and specific payer contracts. For example, Medicare allows no-show fees if non-Medicare patients are charged the same way, while Medicaid rules often bar billing the patient directly. Some electronic health record (EHR) systems let you set up internal non-billable tracking codes or practice fees for internal record-keeping.

There is no specific ICD-10-CM diagnosis code for a purely administrative cancelled appointment or a patient "no-show," because ICD-10 codes describe diagnoses or reasons for a medical encounter, not administrative schedule changes.

If a procedure or treatment was scheduled and not carried out during an actual clinical encounter (e.g., the patient arrived but the procedure was cancelled), you use codes from the Z53 series depending on the reason:

• Z53.9: Procedure and treatment not carried out, unspecified reason
• Z53.09: Procedure and treatment not carried out because of other contraindication
• Z53.20: Procedure and treatment not carried out due to unspecified patient reason
• Z53.21: Procedure and treatment not carried out due to patient leaving prior to being seen by health care provider

Key Points for Practice Management

• Insurance Billing: ICD-10 codes are not submitted to insurance for a patient who simply fails to show up or cancels before an encounter, as no medical service occurred.
• Internal Tracking: Most medical and dental practices use internal or "dummy" billing codes in their practice management software to track missed or cancelled visits for administrative or fee-charging policies rather than submitting them on a claim form. (Note: Dental practices have specific CDT codes like D9987 for cancelled appointments, but these are for internal tracking/charging, not insurance reimbursement).

The primary ICD-10-CM code for a visit or procedure not carried out because a patient left before being seen is Z53.21.

Common ICD-10 Codes for Unperformed Visits

• Z53.21: Procedure and treatment not carried out due to patient leaving prior to being seen by health care provider (Left Without Being Seen / LWBS).
• Z53.20: Procedure and treatment not carried out because of patient's decision for unspecified reasons.
• Z53.29: Procedure and treatment not carried out because of patient's decision for other reasons.
• Z53.9: Procedure and treatment not carried out, unspecified reason (general visit cancellation).

When to Use These Codes

• Use Z53.21 when a patient registers or goes through triage in an emergency room, urgent care, or clinic, but leaves before a provider evaluates them.
• Use other Z53 codes when a scheduled appointment or procedure is canceled or aborted due to patient choice, contraindications, or other factors.