CPT Code 00102: Anesthesia for Plastic Repair of Cleft Lip – Complete Billing & Coding Guide

CPT code 00102 describes anesthesia services provided during the plastic surgical repair of a cleft lip. Classified under the Anesthesia for Procedures on the Head code range (00100–00222), this code is used exclusively when the anesthesiologist or CRNA administers anesthesia to a patient undergoing operative correction of a congenital cleft lip deformity. Because cleft lip repair is almost always performed on infants and young children, billing teams must navigate pediatric-specific modifiers, qualifying circumstance add-on codes, and payer-specific reimbursement rules that do not apply to most other anesthesia claims.

What Does CPT Code 00102 Mean?

CPT code 00102 — Anesthesia for procedures on plastic repair of cleft lip — is a five-digit procedure code within the AMA CPT anesthesia section, maintained by the American Medical Association. It captures the full scope of anesthesia care associated with cleft lip reconstruction, including pre-operative evaluation, intraoperative monitoring, and immediate post-anesthesia recovery management.

Key attributes of CPT 00102:

• Code category: Anesthesia for Procedures on the Head (00100–00222)
• Procedure type: Plastic/reconstructive surgical repair (congenital deformity)
• Patient population: Predominantly pediatric; most commonly infants under 12 months
• Billable providers: Anesthesiologists (MD/DO), CRNAs, anesthesiology assistants
• Care settings: Hospital inpatient OR, hospital outpatient surgical suite, ambulatory surgery center (ASC)
• Base unit value: 7 base units (per ASA Relative Value Guide)

What Procedures Does CPT 00102 Cover?

CPT 00102 covers anesthesia services rendered during any operative plastic repair of a cleft lip, regardless of whether the repair is unilateral or bilateral, primary or revision.

Included clinical presentations and procedure types:

• Primary unilateral cleft lip repair (single-stage Millard rotation-advancement or Tennison-Randall technique)
• Primary bilateral cleft lip repair
• Staged bilateral cleft lip repair (each operative stage reported separately)
• Revision cleft lip repair when performed as a distinct operative session
• Combined cleft lip and nasal tip reconstruction performed in the same operative field during the lip repair session

What Does CPT 00102 Specifically Exclude?

• Non-cleft lip procedures: Anesthesia for lip repairs due to trauma, tumor excision, or other non-congenital conditions — report CPT 00300 (anesthesia for procedures on the head, neck, and posterior trunk) instead
• Cleft palate repair: Use CPT 00172 (anesthesia for repair of cleft palate), which is a separate, distinct code
• Intraoral or pharyngeal procedures: Do not bundle separate pharyngeal work into CPT 00102
• Lip biopsy or minor lip procedures: CPT 00102 is not appropriate for diagnostic or minor dermatologic procedures on the lip

In practice, coders frequently flag claims where 00102 and 00172 are billed for procedures performed during the same anesthetic session without a distinct operative note supporting two separate surgical sites. Auditors will look for documentation that confirms the palate repair was a separately identifiable, staged service.

When Is CPT 00102 the Right Code to Use?

Selecting CPT 00102 correctly requires confirming three criteria in sequence:

1. Confirm the operative target is the lip — The surgeon’s operative note must specify the cleft lip as the anatomical site being repaired. Palate, pharyngeal, or intraoral work alone does not qualify.
2. Confirm the etiology is a cleft deformity — CPT 00102 is congenital deformity-specific. Repair of an acquired lip defect (post-trauma, post-ablation) routes to CPT 00300.
3. Confirm a separately reportable anesthesia service was provided — The anesthesiologist or CRNA must have been present and responsible for the patient’s anesthesia care during the operative session.
4. Assign the appropriate physical status modifier — Always append a P1–P6 modifier (or HCPCS AA/QX/QY/QZ/QK/AD for provider type) to the claim.
5. Evaluate for qualifying circumstance add-on codes — Most cleft lip repairs are performed on infants under 1 year of age, which triggers reporting consideration for +99100 (anesthesia complicated by extreme age: under 1 year or over 70 years).

How Does CPT 00102 Differ From CPT 00172 and CPT 00300?

What Documentation Is Required to Support CPT 00102?

What Must the Provider Document in the Anesthesia Record and Clinical Notes?

A defensible 00102 claim requires the following documentation elements — each must appear in the anesthesia record, operative report, or pre-operative evaluation note:

1. Patient’s date of birth (critical for evaluating +99100 qualifying circumstance eligibility)
2. Confirmed diagnosis of cleft lip deformity, including laterality (unilateral vs. bilateral) and any prior surgical history
3. ASA Physical Status classification assigned by the anesthesiologist on the day of surgery
4. Anesthesia start and stop times (required for time-unit calculation)
5. Anesthesia type administered (general endotracheal anesthesia is standard for this population)
6. Pre-operative evaluation note documenting the patient’s baseline condition, airway assessment, and planned anesthetic approach
7. Intraoperative monitoring documentation (continuous EKG, pulse oximetry, end-tidal CO₂, temperature)
8. Name and provider type of each anesthesia professional present (for correct HCPCS modifier assignment)
9. Post-anesthesia care documentation showing handoff and recovery status

What Are the Documentation Standards for Facility vs. Non-Facility Settings?

How Does CPT 00102 Affect Medical Billing and Reimbursement?

Unlike RVU-based reimbursement used for surgical and evaluation-and-management codes, anesthesia services billed under CPT 00102 follow the anesthesia payment formula:

Payment = (Base Units + Time Units + Qualifying Circumstance Units) × Conversion Factor

Example: A 45-minute cleft lip repair on a healthy 6-month-old infant (P1, under 1 year) → 7 base units + 3 time units + 1 qualifying circumstance unit = 11 total units × $20.3178 = ~$223.50 Medicare allowable (before geographic adjustment). Commercial rates vary substantially and are negotiated individually.

Payer considerations:

• Medicare does not separately reimburse physical status modifiers (P1–P6) or qualifying circumstance add-on codes — these are informational on Medicare claims
• Most commercial payers do reimburse for qualifying circumstances (+99100, +99116, +99135, +99140) and physical status modifiers — verify per contract
• Geographic Practice Cost Index (GPCI) adjustments apply and vary significantly by locality

What Modifiers Are Commonly Used With CPT 00102?

Are There Any Prior Authorization, Coverage Restrictions, or LCD Requirements?

• Cleft lip repair is generally considered medically necessary and covered by most commercial payers and Medicaid programs when supported by a documented congenital diagnosis (ICD-10 Q36.x series)
• Medicare coverage for CPT 00102 is uncommon in practice given the predominantly pediatric patient population — verify with the applicable MAC when Medicare is the payer
• Medicaid coverage varies by state; most states cover cleft lip repair under EPSDT (Early and Periodic Screening, Diagnostic, and Treatment) provisions
• No active National Coverage Determination (NCD) or Local Coverage Determination (LCD) specifically restricts CPT 00102 at the national level
• Prior authorization is required by many commercial payers for surgical facility and anesthesia services in the pediatric surgical setting — confirm requirements before the procedure date

What CPT or HCPCS Codes Are Commonly Billed Alongside CPT 00102?

Which Code Combinations Trigger NCCI or CCI Edits?

• Reporting CPT 00102 and 00172 for the same anesthetic session is the most common edit trigger. These codes describe anesthesia for two anatomically distinct repair sites. They should not be reported together unless distinct, separately documented operative sessions occurred under separate anesthetics.
• CPT 00102 and 00300 should never be reported together — 00300 is a catch-all code and 00102 is the more specific descriptor; specificity wins under NCCI policy.
• Review the CMS NCCI Policy Manual, Chapter 2 (Anesthesia Services) for current edit pair guidance before submitting same-day anesthesia claims.

What Coding Errors Should You Avoid With CPT 00102?

Anesthesia billers and coders encounter the following errors with regularity on CPT 00102 claims:

1. Using 00102 for non-cleft lip repairs — Any lip repair not specifically treating a congenital cleft deformity belongs under CPT 00300. Coding tip: Confirm the ICD-10 diagnosis code is in the Q36.x series (cleft lip) before billing 00102.
2. Omitting the +99100 add-on code — The majority of cleft lip repairs are performed on infants under 1 year old. Failing to report +99100 leaves reimbursement on the table with commercial payers.
3. Missing or incorrect HCPCS provider modifier — Claims submitted without AA, QX, QY, QK, QZ, or AD will be denied or delayed by most payers. The modifier signals who physically performed and supervised the anesthesia.
4. Reporting 00102 and 00172 on the same claim for a combined lip-palate repair performed under a single anesthetic — Only one anesthesia code covers a single surgical session. If both sites were repaired in one OR visit under continuous anesthesia, report the anesthesia code that reflects the primary procedure.
5. Incorrect time unit calculation — Each 15-minute interval equals one time unit. Partial intervals are typically rounded based on payer policy. Document anesthesia start and stop time precisely.
6. Failing to assign the physical status modifier that matches the documented ASA classification — The physical status on the anesthesia record and the modifier on the claim must match. Discrepancies are an audit flag.

What Do Auditors and RAC Reviewers Look for When Reviewing CPT 00102 Claims?

• Mismatch between the documented ASA Physical Status in the anesthesia record and the P-modifier billed on the claim
• Missing anesthesia start and stop times (time units cannot be verified without them)
• ICD-10 diagnosis code not in the Q36.x (cleft lip) range when 00102 is billed
• +99100 reported without documented patient age under 1 year (or over 70 years)
• CRNA claims without an associated physician supervision modifier or without documentation of the supervision arrangement
• Unbundled billing of 00102 and 00172 for procedures performed during a single continuous anesthetic session

Real-World Coding Scenario — How CPT 00102 Is Applied in Practice

Clinical scenario: A 7-month-old female patient with a documented unilateral cleft lip (ICD-10: Q36.9) is admitted to a hospital outpatient surgical suite for primary cleft lip repair. The anesthesiologist personally performs general endotracheal anesthesia. The procedure begins at 7:45 AM and anesthesia end time is documented as 9:15 AM (90 minutes). The patient is a healthy infant with no systemic disease.

Correct Code Application

• CPT 00102-AA-P1 — Anesthesia for plastic repair of cleft lip; anesthesiologist performed personally (AA); normal healthy patient (P1)
• +99100 — Qualifying circumstance: extreme age (patient is 7 months old, under 1 year)
• ICD-10: Q36.9 — Cleft lip, unilateral (supports medical necessity)
• Time units: 90 minutes ÷ 15 = 6 time units
• Total billable units: 7 base + 6 time + 1 qualifying = 14 units

Common Mistake in This Scenario

• Billing CPT 00300-AA-P1 (general head/neck anesthesia code) instead of 00102 — this is a less specific code and will be downcoded or denied when the diagnosis clearly identifies a cleft lip repair
• Omitting +99100 — At a commercial rate of $78/unit (median per ASA data), this omission costs approximately $78 per claim
• Appending -P2 when the patient has no documented systemic condition — physical status modifiers must match the documented ASA classification, not be estimated

Frequently Asked Questions About CPT Code 00102

Is CPT Code 00102 Still Valid for Use in 2025?

CPT code 00102 remains a valid, active code for 2025 with no changes to its AMA descriptor or base unit value from prior years. The CMS Anesthesia Base Units for CPT 00102 are also unchanged for CY 2025, as confirmed in the CMS Anesthesiologists Center annual release. Coders should verify annually with the AMA CPT Professional Edition and the CMS Physician Fee Schedule updates.

What Is the Difference Between CPT 00102 and CPT 00172?

CPT 00102 covers anesthesia for plastic repair of the cleft lip, while CPT 00172 describes anesthesia for repair of the cleft palate — two anatomically and surgically distinct procedures. These codes are not interchangeable and should not be reported together for the same anesthetic session, even when a patient has both a cleft lip and cleft palate, unless each defect was repaired under a separate, independently documented anesthetic.

When Should +99100 Be Reported With CPT 00102?

Add-on code +99100 should be reported alongside CPT 00102 whenever the patient is under 1 year of age or over 70 years of age on the date of service. Since most cleft lip repairs are performed in infancy — typically between ages 3 and 12 months — +99100 is applicable for the majority of 00102 claims. Note that Medicare does not separately reimburse +99100; it is primarily a commercial and Medicaid add-on.

What Physical Status Modifier Should Be Used With CPT 00102?

The physical status modifier must reflect the ASA classification documented by the anesthesiologist in the pre-operative note or anesthesia record. A healthy infant with no systemic disease receives P1; an infant with a documented congenital cardiac condition or significant respiratory compromise may warrant P2 or P3. The modifier must match the chart — billing P2 when P1 is documented constitutes upcoding.

Does Medicare Cover CPT 00102?

Medicare technically can reimburse CPT 00102, but it is rarely applicable in practice because the patient population for cleft lip repair is almost exclusively pediatric and Medicare covers patients aged 65 and older (or younger patients with qualifying disabilities). When Medicare is the primary payer for a qualifying beneficiary, verify coverage and billing requirements with the applicable Medicare Administrative Contractor (MAC).

Can CPT 00102 Be Billed When a CRNA Provides Anesthesia Without Physician Direction?

Yes — when a CRNA independently provides anesthesia services for a cleft lip repair without physician medical direction, CPT 00102 should be reported with the QZ modifier (CRNA without medical direction). If the CRNA is medically directed by an anesthesiologist, the QX modifier applies to the CRNA’s claim and the QK or AA modifier (depending on concurrent cases) applies to the physician’s claim.

Key Takeaways for Billing and Coding CPT 00102

• CPT 00102 is restricted to anesthesia for congenital cleft lip repair only — do not use it for trauma, tumor, or other non-congenital lip procedures (use CPT 00300 instead)
• Always append both a physical status modifier (P1–P6) and a HCPCS provider type modifier (AA, QX, QK, etc.) — claims missing these will deny
• +99100 is an essential add-on for nearly all 00102 claims given the typical infant patient age — commercial payers pay it; Medicare does not
• The anesthesia payment formula (Base Units + Time Units × Conversion Factor) drives reimbursement — accurate time documentation is non-negotiable
• Never report 00102 and 00172 together for the same continuous anesthetic session; select the code that reflects the primary procedure performed
• Confirm medical necessity with an ICD-10 code from the Q36.x series (cleft lip); a diagnosis mismatch is the most common denial trigger for this code
• For pediatric anesthesia billing compliance guidance, reference the CMS Medicare Claims Processing Manual, Chapter 12, and the ASA Relative Value Guide for base unit values

For current anesthesia conversion factors by locality, consult the CMS Anesthesiologists Center directly. Base unit values and physical status reporting guidance are detailed in the ASA Relative Value Guide. For NCCI bundling edit review, refer to the CMS National Correct Coding Initiative Policy Manual, Chapter 2. CPT code descriptors are copyright the American Medical Association; verify all code descriptors in the current AMA CPT Professional Edition.