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    v1.0.30
    OpenPayerBilling CodesDiagnostic Ultrasound Procedures of the Head and NeckCPT cpt-76519-a-scan-ocular-biometry-iol-calculation
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    CPT 76519: A-scan Ultrasound Axial Length for IOL Calculation

    Medicare pays $48 on average nationally for this procedure.

    CPT code 76519 describes A-scan ultrasound echography used to measure the axial length of the eye for intraocular lens (IOL) calculation prior to cataract surgery; this is a diagnostic ocular biometry service typically performed in an ophthalmology clinic or outpatient surgical center to obtain axial length measurements for IOL power determination.

    For related coverage guidance, see recent payer policy updates: Office-based Laryngeal Procedures, Injectable Dermal Fillers and Bulking Agents (for New Mexico Only), Injectable Dermal Fillers and Bulking Agents (for Kentucky Only).

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 72-year-old patient with progressive visual decline from a dense cataract is scheduled for preoperative evaluation prior to elective cataract extraction with intraocular lens (IOL) implantation. In clinic, the ophthalmologist documents visual acuity, a dilated slit-lamp exam confirming lens opacity, and discusses surgical risks and refractive goals. To determine the appropriate IOL power, the provider performs 76519 (A-scan ultrasound axial length measurement) when optical biometry (e.g., partial coherence interferometry) is unavailable or unreliable due to dense cataract, corneal opacity, or poor fixation. The measurement workflow includes topical anesthesia as needed, placement of the ultrasound probe on the applanation surface or immersion technique, three consistent axial length readings for each eye, corneal curvature data from keratometry or topography, and calculation of IOL power using the selected formula. Results are documented in the operative plan and used to order the appropriate IOL power for the scheduled cataract extraction procedure performed in an ambulatory surgery center or hospital outpatient department.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    66984Removal of cataract with insertion of intraocular lens, complex or standard (extracapsular or phacoemulsification techniques)Definitive surgical procedure for which 76519 axial length measurements are performed as preoperative planning to determine IOL power.
    92015Determination of refractive state (refraction) and prescription when performedRefraction provides manifest refraction data used alongside axial length and keratometry for IOL power planning.
    92136Ophthalmic biometry by partial coherence interferometry (e.g., IOLMaster)An alternative optical method for axial length measurement; 76519 is used when optical biometry is not possible.
    92083Visual field examination, established patient; extended examinationPreoperative visual function testing sometimes performed as part of comprehensive ophthalmic assessment before cataract surgery.
    92250Fundus photography with interpretation and reportRetinal imaging often performed preoperatively to document macular or retinal pathology that may affect visual outcomes and IOL selection.

    Related Modifiers

    11 rows

    ModifierDescriptionWhen to Use
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    25CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable…- When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    24Modifier 24 denotes an unrelated evaluation and management (E/M) service performed by the same physician or qualified healthcare professional during a postoperative global period. Per CPT guidance,…- Use modifier 24 when you report an evaluation and management (E/M) service performed by the same physician or same-specialty group during a procedure’s postoperative global period that is unrelated…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
    73Modifier 73 indicates a facility-level outpatient hospital or ASC procedure that was discontinued after the patient was prepared and taken to the procedure/operating room but before any anesthesia…- When to use: Apply CPT modifier 73 on the FACILITY (outpatient hospital or ASC) claim when the patient has been fully prepared and physically taken into the procedure/operating room but the…
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…

    Showing 1–10 of 11

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207RG0300X
    207RH0000X
    208800000X
    207RP1001X
    225XP0200X
    332100000X
    2084A2900X
    207RM1200X

    Related Payer Policy Updates

    Specialty: Otorhinolaryngology (ENT)1 / 2

    10 rows

    PolicyPayerEffective Date
    Office-based Laryngeal ProceduresPremera Bluecross2026-10-06
    Injectable Dermal Fillers and Bulking Agents (for New Mexico Only)UnitedHealthcare2026-10-01
    Injectable Dermal Fillers and Bulking Agents (for Kentucky Only)UnitedHealthcare2026-10-01
    Hearing Aids and Devices Including Wearable, Bone-Anchored, and Semi-Implantable (for Indiana Only)UnitedHealthcare2026-10-01
    Otoacoustic Emissions Testing (for Oxford Only)UnitedHealthcare2026-10-01
    Injectable Dermal Fillers and Bulking AgentsUnitedHealthcare2026-10-01
    Injectable Dermal Fillers and Bulking AgentsUnitedHealthcare2026-10-01
    Sinus Surgeries and Interventions (for North Carolina Only)UnitedHealthcare2026-10-01
    Injectable Dermal Fillers and Bulking Agents (for Nebraska Only)UnitedHealthcare2026-10-01
    Injectable Dermal Fillers and Bulking Agents (for Kansas Only)UnitedHealthcare2026-10-01

    Related Codes

    CPT-76506-ECHOENCEPHALOGRAPHY-INTRACRANIAL-ULTRASOUND

    CPT 76506: Echoencephalography (Cranial Ultrasound)

    CPT-76510-OCULAR-ULTRASOUND-B-SCAN-AND-A-SCAN

    CPT 76510: Ocular B‑scan and Quantitative A‑scan Ultrasound

    CPT-76511-QUANTITATIVE-A-SCAN-OPHTHALMIC-ULTRASOUND

    CPT 76511: Quantitative A‑scan Ultrasound of Intraocular/Orbital Structures

    CPT-76512-B-SCAN-OPHTHALMIC-ULTRASOUND-EYE-ORBIT

    CPT 76512: B‑scan Ultrasound of Intraocular and Orbital Structures

    CPT-76513-IMMERSION-B-SCAN-ANTERIOR-SEGMENT-IMAGING

    CPT 76513: Anterior Segment Imaging with Immersion B-Scan or Biomicroscopy

    CPT-76514-CONTACT-B-SCAN-CORNEAL-THICKNESS-PACHYMETRY

    CPT 76514: Corneal Thickness Measurement by Contact B-Scan

    CPT-76516-A-SCAN-OCULAR-AXIAL-LENGTH-MEASUREMENT

    CPT 76516: A-scan Ultrasound Axial Length Measurement

    CPT-76529-OPHTHALMIC-ULTRASOUND-INTRAOCULAR-FOREIGN-BODY-LOCALIZATION

    CPT 76529: Ophthalmic Ultrasound Localization of Intraocular Foreign Body

    CPT-76536-HEAD-NECK-SOFT-TISSUE-ULTRASOUND

    CPT 76536: Ultrasound, Soft Tissues of Head and Neck

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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