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ICD-10-CM 2027 diagnosis code

B40.8Other forms of blastomycosis

Not billable — use a more specific code

B40.8 is a header code, so it can't be reported by itself. Choose one of the 2 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 B40.8

B40.8 is the ICD-10-CM diagnosis code for other forms of blastomycosis. It belongs to category B40 (blastomycosis), 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 2 subcodes must be used instead.

Within B40, choose B40.8 (Other forms of blastomycosis) only when documentation doesn't support a more specific option: acute pulmonary blastomycosis (B40.0), chronic pulmonary blastomycosis (B40.1), pulmonary blastomycosis, unspecified (B40.2), cutaneous blastomycosis (B40.3), disseminated blastomycosis (B40.7) and unspecified (B40.9).

To report this condition, pick the subcode that matches the documentation: B40.81 (meningoencephalitis) and B40.89 (blastomycosis).

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 B40.8

Notes that apply from higher levels

Instructions written at a parent level also apply to B40.8.

› From B40 Blastomycosis
Excludes1
  • Brazilian blastomycosis (B41.-)
  • keloidal blastomycosis (B48.0)

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

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about B40.8

Is B40.8 billable?

No. B40.8 is a header code. Report one of its more specific subcodes instead.