What insurance policy changes affect code H18.451?

There are 3 tracked policy changes affecting code H18.451, including updates from Aetna. Each change may modify coverage criteria, reimbursement rates, or prior-authorization requirements.

Which payers have updated policy for code H18.451?

Payers that have issued tracked updates for code H18.451 include: Aetna.

How do I get notified when code H18.451 policy changes?

Create a free account at PolicyChanges.app and save a search filtered to code H18.451. You will get an email when new policy changes reference this code: daily or weekly, your choice, on every plan.

Why do payers change policies for code H18.451?

Payers revise policies for individual billing codes to align with updated clinical guidelines, CMS rule changes, fraud and abuse prevention measures, or network cost-management goals. Changes can affect medical necessity criteria, place-of-service restrictions, bundling rules, or whether a code requires prior authorization.

PAYER POLICY CHANGES

H18.451 Insurance Policy Changes

ICD-10 H18.451 is officially defined as "Nodular corneal degeneration, right eye." code H18.451 is referenced in 3 tracked payer policy changes from Aetna. For billers and coders, staying current on payer-specific coverage criteria, reimbursement rules, and prior-authorization requirements for code H18.451 is critical to clean claim submission. Each entry below links to the full policy analysis with effective dates and action steps.

Aetna · Identified Aug 19, 2026Medium impact
Corneal Graft and Amniotic Membrane Transplantation, Corneal Stromal Lenticule Transplantation, Limbal Stem Cell Transplantation, or Sural Nerve Grafting for Ocular Indications (CPB 0293, reviewed 2026-06-08)
Aetna considers preserved human amniotic membrane or limbal stem cell transplantation medically necessary for ocular surface reconstruction in members with limbal deficiency that is refractory to conventional treatment, when the member has a listed condition such as chemical or thermal injury of the ocular surface, Stevens-Johnson syndrome, bacterial keratitis, bullous keratopathy, or pterygium. More than 3 applications per eye of any human amniotic membrane graft for ophthalmic indications is considered not medically necessary, and an additional three applications per eye per year in each subsequent year may be medically necessary for chronic or recurrent ophthalmic conditions. Allogeneic corneal epithelial stem cell transplantation is listed as experimental, investigational, or unproven, and amniotic membrane placement for recurrent corneal erosions in epithelial basement membrane dystrophy is considered not medically necessary.
Aetna · Identified Aug 15, 2026Medium impact
Corneal Pachymetry (CPB 0681, reviewed 2025-10-15)
Aetna considers ultrasound corneal pachymetry (CPT 76514) medically necessary for listed indications, including keratoconus, Fuchs' endothelial dystrophy, corneal edema, bullous keratopathy, corneal transplant and corneal refractive surgery evaluations, narrow angles, and glaucoma or glaucoma suspects, with the glaucoma indication covered once per lifetime. Repeat pachymetry for corneal diseases and injuries is not medically necessary if performed more frequently than once every 6 months. Screening for glaucoma without signs or symptoms, diagnosis of Marfan syndrome, pterygium management and monitoring on hydroxychloroquine are listed as experimental, investigational or unproven.
Aetna · Identified Nov 3, 2026Low impact
Corneal Pachymetry (CPB 0681, reviewed 2026-10-26)
This is Aetna's clinical policy bulletin on ultrasound corneal pachymetry (corneal thickness measurement), CPB 0681, last reviewed October 26, 2026. It lists the indications where the test is considered medically necessary, the uses Aetna considers experimental, and a limit of one repeat test every six months for corneal diseases and injuries. The text does not describe a new rule with a stated effective date, so treat it as current policy language and confirm with Aetna before relying on it.

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Corneal Graft and Amniotic Membrane Transplantation, Corneal Stromal Lenticule Transplantation, Limbal Stem Cell Transplantation, or Sural Nerve Grafting for Ocular Indications (CPB 0293, reviewed 2026-06-08)

Corneal Pachymetry (CPB 0681, reviewed 2025-10-15)

Corneal Pachymetry (CPB 0681, reviewed 2026-10-26)

What insurance policy changes affect code H18.451?

Which payers have updated policy for code H18.451?

How do I get notified when code H18.451 policy changes?

Why do payers change policies for code H18.451?