A botched circumcision at Bellevue Hospital filled a Manhattan infant’s first months with pain, a mom claims in court papers.

An intern circumcised Karina Collado’s baby boy without asking a day after his February 2015 birth, she said in a Manhattan Supreme Court filing.

In 10 visits over 18 months, Collado “was assured that her son’s penis was going though the normal healing process,” according to court documents.

In January, Collado took her son to Mount Sinai Medical Center and learned he had a urinary tract infection that would require surgery.

The boy’s “deformed” penis has two holes on either side of his urethra and “significant” foreskin still attached, the mom charges.

“It’s a matter that’s under investigation,” said Collado’s lawyer, Eric Schwarz.

The city declined to comment on the claim.