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ICD-10-CM 2027 diagnosis code

B35Dermatophytosis

Not billable — use a more specific code

B35 is a header code, so it can't be reported by itself. Choose one of the 9 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 B35

B35 is the ICD-10-CM diagnosis code for dermatophytosis. 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 9 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: B35.0 (capitis), B35.1 (unguium), B35.2 (manuum), B35.3 (pedis), B35.4 (corporis), B35.5 (imbricata), B35.6 (cruris), B35.8 (dermatophytoses) and 1 more.

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 B35

Coding notes

IncludesFurther defines the content of the category
  • favus
  • infections due to species of Epidermophyton, Micro-sporum and Trichophyton
  • tinea, any type except those in B36.-

Notes that apply from higher levels

Instructions written at a parent level also apply to B35.

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

Codes whose notes reference B35

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 B35

Is B35 billable?

No. B35 is a header code. Report one of its more specific subcodes instead.