B48 – Other mycoses, not elsewhere classified

ICD-10-CM 2027 diagnosis code · Mycoses

Non-billable header

ICD-10-CM code B48
Code
B48 (claims format: B48)
Description
Other mycoses, not elsewhere classified
Billable
No – use a more specific code below
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
1. Certain infectious and parasitic diseases (A00-B99)
Block
B35-B49 Mycoses

Billable codes under B48

B48 is a header code and cannot be used on claims. Choose the most specific code:

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block B35-B49

Excludes2 (not included here):
  • hypersensitivity pneumonitis due to organic dust (J67.-)
  • mycosis fungoides (C84.0-)

Frequently asked questions

What is ICD-10 code B48?

B48 is the ICD-10-CM code for other mycoses, not elsewhere classified, in the block B35-B49 (Mycoses).

Is B48 a billable code?

No. B48 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.