Munster flew back to Melbourne on Friday to see a hand specialist late in the afternoon, before a call is made on what level of surgery the star five-eighth may require.
It came after he fought through the pain of a compound dislocation of his finger in the Storm's 16-12 win over Parramatta on Thursday night, returning for the second half following two pain-killing injections.
His herculean effort included a nifty dummy followed by a step and pass to set up the crucial match-levelling try late in the game, with two of his fingers bandaged in the shape of sausages.
Hurt when he made a tackle on Clint Gutherson in the 27th minute, Munster immediately left the field but returned less than half-an-hour later after treatment.
"I was a bit surprised when I saw it come out. I have never seen a bone come out before," Munster said.
"I felt my finger numb when I got out of that tackle against Gutho and I thought, 'That doesn't feel right'.
"I looked down and there was a bit of bone sticking out. Shock hit and I didn't really have much emotion.
"I got off and the doc said, 'I have to put a needle in to numb it up'. I'd much rather let it sit there. I hate needles."
Despite the injury, Munster said he did not have any significant trouble gripping the ball during the tight second half and golden-point finish.
"I bumped it a couple of times. A couple of times I got in a tackle and it was a bit wincy," he said.
"But the numbing needles helped with the pain.
"I just tried passing a little bit more. I probably didn't run the ball as much as I would like to.
"It's something I need to focus on next week."
The Storm are hopeful any surgery will be limited to a clean out of the finger early in the week.
Melbourne have their first home game against Canterbury next Saturday, but are hopeful the 28-year-old will be able to make another speedy recovery.
"It's alright, I'll be fine for next week," Munster quipped.
"(But) if I'm only going to be 60 or 70 per cent I'm not going to push it. I'll make sure I'm 100 per cent before I go back out there again."
Already without Ryan Papenhuyzen and Justin Olam, winger Xavier Coates is also expected to join Melbourne's ever-growing casualty ward with a sternoclavicular joint injury.
Coates was due for scans on Friday afternoon, with results expected on Saturday.
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