B35 — Dermatophytosis
Is B35 billable?
No — B35 is a non-billable header code. B35 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 9 billable codes beneath B35.
B35 at a glance
| Code | B35 |
|---|---|
| Description | Dermatophytosis |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Includes
Conditions classified to B35.
- favus
- infections due to species of Epidermophyton, Micro-sporum and Trichophyton
- tinea, any type except those in B36.-
Use additional code — inherited from Chapter 1
Report an additional code alongside B35 to fully describe the condition. B35 is sequenced first.
- code to identify resistance to antimicrobial drugs (Z16.-)
Excludes2 — not included here — inherited from Chapter 1
The conditions below are not part of B35, but a patient may have both at the same time. When documentation supports it, B35 and the excluded code may both be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Excludes2 — not included here — inherited from B35-B49
The conditions below are not part of B35, but a patient may have both at the same time. When documentation supports it, B35 and the excluded code may both be reported.
What codes fall under B35? (9)
How long has B35 existed?
B35 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.