ICD-10-CM 2027 diagnosis code

B48Other mycoses, not elsewhere classified

Not billable — use a more specific code

B48 is a header code, so it can't be reported by itself. Choose one of the 6 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About B48

B48 is the ICD-10-CM diagnosis code for other mycoses, not elsewhere classified. It belongs to block B35-B49 (mycoses) and chapter 1 (certain infectious and parasitic diseases). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: B48.0 (Lobomycosis), B48.1 (Rhinosporidiosis), B48.2 (Allescheriasis), B48.3 (Geotrichosis), B48.4 (Penicillosis) and B48.8 (mycoses).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under B48

Notes that apply from higher levels

Instructions written at a parent level also apply to B48.

Broader instructions also apply from B35-B49 Mycoses and Chapter 1: Certain infectious and parasitic diseases.

Code history

2016
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2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about B48

Is B48 billable?: No. B48 is a header code. Report one of its more specific subcodes instead.