CurrentNeighborhood Health Plan of Rhode IslandPolicy N/A

Metronidazole gel 0.75% — Coverage and Authorization Criteria

Coverage and authorization rules for metronidazole topical gel 0.75% for members of Neighborhood Health Plan of Rhode Island, including required prior treatment and coverage duration.

Policy Summary

PayerNeighborhood Health Plan of Rhode Island

PolicyMetronidazole gel 0.75% — Coverage and Authorization Criteria

Policy CodePolicy N/A

Change TypeRoutine review — no material change

Effective DateApr 1, 2025

Next Review DateJan 1, 2025

Key ActionObtain documentation of a prior trial and inadequate response or intolerance to formulary metronidazole cream 0.75% or azelaic acid gel 15% and evidence of at least one paid claim within the last 180 days.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

12 mocoverage duration

180dlookback

1required trials

Coverage Criteria

Initial Therapy — Covered when ALL of the following are met

Covered when ALL of the following are met:

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Initial coverage criteria: Member has trialed and experienced an inadequate treatment response or intolerance to formulary metronidazole cream 0.75% OR azelaic acid gel 15%.

Prior claim requirement: There is at least one paid claim within the last 180 days for formulary metronidazole cream 0.75%, azelaic acid gel 15%, or metronidazole 0.75% paid gel.at least one prior claim in 180 days

Coverage duration is 12 months.

Neighborhood Health Plan of Rhode Island does not provide coverage for drugs used for investigational purposes. A therapy is considered investigational when it is used at a dose or for a condition that is not recognized as a medically accepted indication in standard reference compendia (such as AHFS-DI, Micromedex DrugDex, Clinical Pharmacology, or Lexi-Drugs) or when there is insufficient peer-reviewed published evidence to support its use.

Coding and Lookback

Prior claim lookback — 180 days

Lookback windowAt least one paid claim within the last 180 days for formulary metronidazole cream 0.75%, azelaic acid gel 15%, or metronidazole 0.75% paid gel.

PurposeUsed as coding logic for initial coverage/step therapy determination for metronidazole gel 0.75%.

Coverage implicationA qualifying prior paid claim in the 180‑day window is required to authorize coverage for metronidazole 0.75% gel.

Provider Actions and Requirements

Prior Authorization

Prior claim required

Prior authorization requires evidence of at least one prior claim for a formulary topical therapy within the past 180 days (e.g., formulary metronidazole cream 0.75% or azelaic acid gel 15%).

At least one paid claim within the last 180 days for: metronidazole cream 0.75% (formulary), azelaic acid gel 15% (formulary), or metronidazole 0.75% gel.

Step Therapy

Step therapy requirement

Step therapy: prior to approval, the member must have trialed and had an inadequate response or documented intolerance to formulary topical options.

Required trial of formulary metronidazole cream 0.75% OR azelaic acid gel 15% with inadequate response or intolerance documented.
Coverage is step-therapy–based; approval for metronidazole gel 0.75% is contingent on meeting step requirements.

Documentation Required

Required prior trial documentation

Provide documentation that the member trialed and experienced inadequate treatment response or intolerance to the required formulary agents.

Clinical notes indicating start and stop dates, reason for discontinuation (inadequate response or adverse effects), and treatments tried.
If intolerance/adverse event is cited, include description of adverse reaction and management.

Denial Risk

Prior therapy not documented

Lack of documentation showing the required prior trial and inadequate response or intolerance will result in denial of prior authorization.

No approval without evidence of prior paid claim(s) within 180 days AND supporting clinical documentation of inadequate response or intolerance.
Coverage duration (if approved): up to 12 months per policy logic.

Background

Topical metronidazole preparations are used for certain dermatologic indications. This policy defines coverage and authorization requirements for metronidazole gel 0.75%, including step-therapy and prior-claim requirements before coverage is approved.

For initial coverage, the member must have trialed and experienced an inadequate treatment response or intolerance to formulary metronidazole cream 0.75% or azelaic acid gel 15%, and there must be evidence of at least one prior paid claim within the last 180 days for one of the specified formulary products. When these conditions are met, coverage duration is 12 months.

Definitions

Investigational use — definition

DefinitionInvestigational use: therapies used at a dose or for a condition other than those recognized as medically accepted indications as defined by standard reference compendia (AHFS‑DI, Thomson Micromedex DrugDex, Clinical Pharmacology, Wolters Kluwer Lexi‑Drugs) or peer‑reviewed published medical literature.

Coverage stanceNeighborhood does not provide coverage for drugs when used for investigational purposes.

Sources that define medically accepted indicationsAHFS‑DI; Thomson Micromedex DrugDex; Clinical Pharmacology; Wolters Kluwer Lexi‑Drugs; peer‑reviewed published medical literature.

Initial Therapy Criteria

Initial therapy — 1 top-level node

Initial authorization: Member must have trialed and had an inadequate response or intolerance to formulary metronidazole cream 0.75% or azelaic acid gel 15% and have at least one prior paid claim within the last 180 days for one of the specified formulary products.one prior paid claim in 180 days

Coverage duration: 12 months.

Step Therapy Requirements

Step	Required prior therapy	Failure criteria / documentation	Coverage stance
1	Trial of formulary metronidazole cream 0.75% OR azelaic acid gel 15%	Documentation of inadequate treatment response or intolerance to the formulary product; at least one paid claim within the last 180 days for formulary metronidazole cream 0.75%, azelaic acid gel 15%, or metronidazole 0.75% paid gel	Covered with criteria