CVS Pharmacy has a similar policy to beleaguered competitor Walgreens, which allows pharmacists to deny prescriptions that conflict with their religious or moral beliefs, such as birth control or condoms.

Walgreens came under fire last week when customers documented their issues filling prescriptions for birth control or buying products for other reproductive choices like condoms.

Those examples went viral on social media under the hashtag #BoycottWalgreens.

CVS is the nation's largest pharmacy service by market share according to consumer data provider Statista, eclipsing Rite Aid, Walgreens and Walmart and over a dozen other brands. CVS has a market capitalization of $124.86 billion.

Amy Thibault, the lead director of external communications for CVS, told USA TODAY that the company has policies in place to ensure no patient is denied access to medication prescribed by a physician based on a staff member's individual beliefs.

"Under federal law, we must reasonably accommodate a religious conviction, and in certain states a moral or ethical conviction, that may prevent a pharmacist or pharmacy technician from dispensing specific medications," Thibault said in a statement.

Thibault said an objecting pharmacist must request an accommodation from CVS ahead of time and make arrangements to ensure patient care, either from a different pharmacist or elsewhere. Most states require that care providers who decline to provide services or prescriptions must find an alternate option for patients.

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CVS declined to comment on whether its policy applies nationwide or only in the six states that require belief exemptions for pharmacists and other care providers. Those states are Arizona, Arkansas, Georgia, Idaho, Mississippi and South Dakota – and they don't require pharmacists to find an alternate way to fill any denied prescriptions elsewhere.

CVS also declined to say whether it has enacted its internal policies to abide by the "conscience clause," a part of one of the so-called Church Amendments, which passed in 1992 and allows physicians and pharmacists to refuse to provide services that they say are not allowed by their religious or moral code.

That clause is frequently cited by businesses as a requirement that they allow employees conscientious leeway in providing products that conflict with their faith.

CVS also declined to comment on whether pharmacists' who opt out of filling a birth control prescription have to route the patient to a different pharmacy that can.