Is B49 a billable code?
Yes. B49 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.
ICD-10-CM FY2027 diagnosis code
B49: Unspecified mycosis
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
B49 is a billable ICD-10-CM diagnosis code for unspecified mycosis. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with B49 already added.Good Faith EstimateStart a cost estimate with B49 already added.CMS-1500 Claim FormFill a claim form with B49 in box 21.
B49 questions
What does B49 mean?
B49 is the ICD-10-CM code for Unspecified mycosis. It is in chapter 1, Certain infectious and parasitic diseases (A00-B99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.