Surgical Clearance ICD-10 Codes (2026): Z01.81x Sequencing, CPT and Documentation Guide

The ICD-10-CM code for a surgical clearance visit comes from subcategory Z01.81, Encounter for preprocedural examinations: Z01.810 (cardiovascular), Z01.811 (respiratory), Z01.812 (laboratory) or Z01.818 (other), listed first, followed by the condition that is the reason for surgery and then any findings.

A surgical clearance (preoperative evaluation) is one of the most common requests a primary care office receives. The surgeon wants to know whether the patient’s heart, lungs, diabetes or medications create risk, and the primary care provider, internist or cardiologist sees the patient, documents a risk assessment and sends a recommendation back. The clinical work is routine. The coding is where claims go wrong.

There is no ICD-10-CM code named surgical clearance. Instead, the ICD-10-CM Official Guidelines for Coding and Reporting tell outpatient coders exactly how to sequence a preoperative evaluation, and payers then decide whether to pay the visit as a medically necessary E/M service. This guide covers the valid Z01.81x codes for FY2027 (in effect since 1 October 2026), the sequencing rule, how to choose the CPT code (including why Medicare does not pay consultation codes), and the documentation that keeps these claims from being denied.

The Surgical Clearance ICD-10 Codes for 2026

All preprocedural examination codes sit in category Z01, Encounter for other special examination without complaint, suspected or reported diagnosis. The FY2027 code set did not add, delete or retitle any code in subcategory Z01.81. The table below shows the exact official titles and which ones are billable.

Choosing between Z01.810, Z01.811 and Z01.818

Pick the code that matches the focus of the evaluation the provider actually performed, not the body system of the planned surgery. A cardiologist clearing a patient for knee replacement reports Z01.810, because the examination is cardiovascular, even though the surgery is orthopedic. A family physician doing a full history, physical, medication review and overall risk assessment before a cholecystectomy reports Z01.818, because the exam is general rather than limited to one system. If the encounter is only a lab draw, Z01.812 applies.

Rule of thumb. One encounter usually gets one Z01.81x code. If the provider performs a general clearance that includes an ECG, Z01.818 still describes the encounter; you do not need to stack Z01.810 and Z01.818 unless the payer asks for it.

How to Sequence Diagnoses on a Pre-Op Clearance Claim

Section IV.M of the ICD-10-CM Official Guidelines (Patients receiving preoperative evaluations only) sets the order for outpatient claims. In plain terms, the guideline says to list a Z01.81 code first to describe the pre-op evaluation, report the condition that is the reason for the surgery as an additional diagnosis, and also code any findings related to the evaluation.

1. First-listed: the Z01.81x code. This tells the payer the purpose of the visit was a preprocedural examination.
2. Second: the reason for surgery. Code the condition the surgeon is treating, for example M17.11 (Unilateral primary osteoarthritis, right knee) before a right knee replacement.
3. Then: findings and risk conditions. Code chronic conditions the provider evaluated and documented because they affect surgical risk, such as I10 (Essential (primary) hypertension), E11.9 (Type 2 diabetes mellitus without complications) or J44.9 (Chronic obstructive pulmonary disease, unspecified), plus any new abnormal findings such as R94.31 (Abnormal electrocardiogram [ECG] [EKG]).
4. Link pointers correctly. On the CMS-1500, point the E/M line to all relevant diagnoses, with the Z01.81x code in position A.

Worked example: knee replacement clearance

A 68-year-old established Medicare patient is scheduled for a right total knee arthroplasty. The orthopedic surgeon sends a written request for medical clearance. The family physician reviews history and medications, examines the patient, orders an ECG, reviews recent labs, documents that the patient’s hypertension and type 2 diabetes are controlled, and sends a letter stating the patient is at acceptable risk for surgery with medication instructions for the day of surgery. The ECG shows a nonspecific abnormality that the physician notes but does not diagnose.

The E/M level depends on the documented medical decision making or total time, not on the fact that it is a clearance. Many clearances with two stable chronic illnesses and data review support a moderate level such as 99214, but the note has to show it. For a new patient, use 99202 to 99205; our 99203 guide explains the new-patient criteria.

Which CPT Code to Bill: Office Visit vs. Consultation

The diagnosis tells the payer why the patient was seen; the CPT code tells them what service was performed. For surgical clearance that choice depends on the payer.

A clearance is not a preventive visit. Do not report a routine exam code such as Z00.00 (Encounter for general adult medical examination without abnormal findings) as the reason for a pre-op evaluation. Medicare does not cover routine physical exams, and a claim that looks like one will be denied.

Surgical Clearance and the Global Surgical Package

Under Medicare’s global surgery rules, a major procedure (90-day global) includes the surgeon’s preoperative visits after the decision for surgery, beginning with the day before the day of surgery. That rule applies to the surgeon and the surgeon’s same-specialty group. It does not absorb a clearance performed by a different physician, such as the patient’s primary care provider or a cardiologist.

• PCP or cardiologist clearance: billed separately by that provider with Z01.81x first.
• Surgeon’s visit where the decision for major surgery is made, on the day of or day before surgery: append modifier 57 to the E/M.
• Surgeon’s routine pre-op visit the day before or day of a major procedure, after the decision was already made: included in the global package and not separately payable. For an example of a 90-day global procedure, see our 58571 laparoscopic hysterectomy guide.
• Bundling denials for these visits often come back as CO-97, meaning the payer considers the service included in another procedure.

Documentation the Surgeon and the Payer Expect

A clearance note has two audiences: the surgeon, who needs a clear risk statement, and the payer, who needs evidence that a medically necessary E/M was performed. Good notes serve both.

• The request: who asked for the evaluation (surgeon name), the planned procedure and the scheduled date.
• Pertinent history, current medications, allergies, prior anesthesia problems and functional capacity.
• The examination performed and any tests ordered or reviewed (ECG, labs, imaging), with the provider’s interpretation.
• Assessment of each chronic condition that affects surgical risk, with status (stable, controlled, needs optimization).
• A clear recommendation: acceptable risk, proceed with conditions, or defer, plus perioperative medication instructions.
• Evidence the report was sent to the requesting surgeon.

Common Denials on Surgical Clearance Claims

Most pre-op denials trace back to a short list of errors:

• Invalid or truncated codes. Billing Z01.81 (header) or a nonexistent code such as Z01.819 triggers a front-end rejection.
• Diagnosis does not support the service. A Z01.81x code alone with an ECG or labs may be questioned; adding the reason for surgery and documented risk conditions supports necessity. Mismatches often return as CO-11 (diagnosis inconsistent with the procedure).
• Consult code sent to Medicare. Medicare will not pay 99242 to 99245; rebill with the correct office visit code.
• Bundled into the global package. The surgeon’s own pre-op visit within the global window without modifier 57 when the decision for surgery was made that day.
• Billed as a routine exam. Using a preventive diagnosis such as Z00.00 when the visit was a clearance.

For a broader view of denial patterns and fixes, see our guide to medical claim denials, causes and fixes, and for how ICD-10, CPT and HCPCS work together on one claim, read understanding CPT, ICD-10 and HCPCS codes.

Surgical Clearance vs. Similar Encounters

Practices that see many pre-op patients, such as family medicine and internal medicine offices, benefit from building these rules into charge review. Our family practice billing services team handles clearances alongside wellness, chronic care and E/M coding.

Frequently Asked Questions