Does H21.239 require prior authorization?

No, H21.239 does not require prior authorization (high confidence). Covered without prior authorization.

`H21.239`, Degeneration of iris (pigmentary), unspecified eye

ICD-10-CM

No Prior Auth Required

Covered without prior authorization (high confidence)

All documentation must be maintained in the patient's medical record and made available to the contractor upon request.
Every page of the record must be legible and include appropriate patient identification information such as complete name and dates of service.
The documentation must include the legible signature of the physician or non-physician practitioner responsible for and providing the care to the patient.
The submitted medical record must support the use of the selected ICD-10-CM code(s).

Visual field examinations are covered when reasonable and necessary as defined by Local Coverage Determination (LCD) L33766.
Assessment of anterior chamber angle (ACA) configuration and detection of occludable/angle-closure (anterior segment OCT (AS-OCT) may be used for assessment of the anterior chamber angle and as a rapid screening tool for detection of occludable angles; cited studies include Nolan et al. 2007, Pekmezci et al. 2009, Desmond et al. 2022)
None. (The CPB states anterior segment OCT is considered experimental and investigational for all indications; see Limitations below.)
In vivo imaging and measurement of anterior segment ocular structures such as corneal and LASIK flap thickness (Visante OCT indication: "indicated for the in vivo imaging and measurement of ocular structures in the anterior segment such as corneal and laser in situ keratomileusis (LASIK) flap thickness (FDA, 2005).")
Measurement of central corneal thickness (CCT) and para-central corneal thickness (PCCT) (comparative studies vs ultrasound pachymetry and Orbscan II cited: Zhao et al. 2007; Li et al. 2007; Ho et al. 2007)
Quantitative assessment of anterior chamber parameters (AOD, ARA, TISA, ACD, angle metrics) for research and clinical evaluation (multiple reproducibility/measurement studies cited, e.g., Radhakrishnan et al. 2007; Maram et al. 2015)

FIRST_COAST-L33766, Visual Field Examination

A57637, Billing and Coding: Visual Field Examination

AETNA-CPB-0749, Anterior Segment Scanning Computerized Ophthalmic Diagnostic Imaging

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