Summary & Overview

CPT 67340: Extraocular Muscle Reattachment During Strabismus Repair

CPT code 67340 designates an add-on ophthalmic surgical procedure for exploration, identification, and suturing of an extraocular muscle detachment discovered during a separately reportable strabismus repair. This code captures additional operative work when an unanticipated muscle detachment is encountered and repaired during the primary strabismus procedure. Nationally, accurate use of 67340 affects surgical reimbursement, clinical documentation, and coding compliance for ophthalmologists and surgical teams performing strabismus corrections.

Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical context for the code, where the service is typically delivered, common modifier usage, and the relationships to related strabismus procedure codes. The publication highlights benchmarks for utilization and payment practice patterns, summarizes recent policy clarifications relevant to add-on ocular surgery reporting, and outlines documentation elements that support appropriate reporting of 67340.

Intended for coding professionals, ophthalmic surgeons, and revenue cycle staff, the content helps clarify when 67340 should be reported alongside a primary strabismus repair and what operational and billing considerations are commonly encountered in national payer environments.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare67340CPTstrabismusophthalmic-surgeryextraocular-muscleadd-on-proceduresurgical-codingambulatory-surgery

Billing Code Overview

CPT code 67340 is an add-on surgical procedure reported when the provider explores, identifies, and sutures back an extraocular muscle that has detached from the eyeball while performing a separately reportable strabismus repair. The code documents work specifically directed at reattaching an extraocular muscle discovered during the course of another strabismus operation.

Service type: Surgical — Ophthalmic (Strabismus/Extraocular Muscle Repair)

Typical site of service: Hospital operating room or ambulatory surgery center, where operative strabismus repairs are performed.

Clinical & Coding Specifications

Clinical Context

A 7-year-old child with congenital esotropia presents to a pediatric ophthalmologist for worsening ocular misalignment and diplopia. The patient is scheduled for a primary strabismus repair under general anesthesia to recess the medial rectus muscles bilaterally. During the procedure the surgeon discovers an extraocular muscle that is detached from its scleral insertion (iatrogenic or longstanding traumatic detachment) and performs exploration, identifies the detached muscle tendon, and reattaches it to the globe in addition to the planned recession. Intraoperative steps include anesthesia induction, exposure of the conjunctiva, dissection to locate the muscle, isolation with muscle hooks, suturing the tendon and reanchoring it to the sclera, tension adjustment, and confirmation of alignment. The add-on service 67340 is reported in conjunction with the primary strabismus repair code to reflect the additional work of exploring, identifying, and suturing a detached extraocular muscle.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when reporting only the physician’s professional component if imaging or diagnostic testing related to the procedure has a separate technical component.
`50`	Bilateral procedure	Use when the same add-on work is performed and reported for both eyes where applicable; check payer rules because `67340` is an add-on code.
`52`	Reduced services	Use if the procedure is partially reduced or less than described without meeting discontinued criteria.
`53`	Discontinued procedure	Use when the procedure is started but discontinued due to extenuating circumstances.
`62`	Two surgeons	Use when two surgeons of different specialties work together as primary surgeons performing distinct portions of the operation.
`63`	Procedure performed on infants less than 4 kg	Use for neonatal/very low-weight infants when applicable per payer guidance.
`66`	Surgical team (eg, cardiac surgery)	Use when a surgical team arrangement is applicable and allowed by payer policy.
`78`	Unplanned return to the operating room for a related procedure during the postoperative period	Use when returning to OR for reattachment after an initial strabismus repair complication.
`79`	Unrelated procedure or service by the same physician during the postoperative period	Use when the additional procedure is unrelated to the original postoperative course.
`RT`	Right side	Use to identify procedures performed on the right eye when bilateral modifiers are required.
`LT`	Left side	Use to identify procedures performed on the left eye when bilateral modifiers are required.
`QK`	Medical direction of two or more CRNAs by an MD/DO	Use when applicable for anesthesia billing and medical direction.
`QX`	CRNA service with medical direction by a physician	Use when CRNA performed anesthesia under physician direction.
`QY`	Medical direction of one CRNA by an anesthesiologist	Use when one CRNA is medically directed by an anesthesiologist.

Taxonomy Code	Specialty	Notes
`207P00000X`	Ophthalmology	Pediatric and adult ophthalmologists commonly perform strabismus surgery and muscle repair.
`207Q00000X`	Pediatric Ophthalmology	Specialists in pediatric eye care frequently manage congenital strabismus and complex muscle detachments.
`163W00000X`	Ophthalmic Plastic and Reconstructive Surgery	Oculoplastic surgeons may participate when complex ocular adnexal dissection is required.
`208000000X`	Optometry	Optometrists do not perform surgery but may be involved in pre- and postoperative refractive and binocular assessments.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`H49.21`	Abducens nerve palsy, right eye	Cranial nerve palsy can cause strabismus requiring muscle surgery and occasionally identification of detached muscles.
`H50.11`	Concomitant esotropia, alternating	Common indication for strabismus repair; intraoperative discovery of a detached muscle may necessitate `67340`.
`H50.12`	Concomitant esotropia, left eye	Same relevance for unilateral presentations.
`H50.21`	Concomitant exotropia, alternating	Exotropic deviations often require muscle surgery where detached tendons may be encountered.
`H57.8`	Other specified disorders of eye and adnexa	Used for less specific sequelae related to extraocular muscle injury or detachment when more precise code is unavailable.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`67311`	Strabismus surgery; recession of extraocular muscle (any one muscle)	Common primary procedure to which `67340` is appended when a detached muscle is also identified and repaired during the same session.
`67312`	Strabismus surgery; resection or advancement (any one muscle)	Performed when tightening or advancing a muscle; `67340` documents separate work to reattach a detached muscle during a concurrent repair.
`67320`	Strabismus surgery; recession of multiple muscles (per additional muscle)	Used when multiple muscles are recessed; `67340` is reported in addition to primary strabismus codes.
`67331`	Strabismus surgery; resection or advancement, multiple muscles (per additional muscle)	Used for multiple resections/advancements; `67340` would be reported as an add-on if a detached muscle is explored and sutured.
`67345`	Strabismus surgery; adjustable suture technique, when performed	May be performed in the same surgical episode; `67340` represents separate action of reattaching a detached muscle.