2026 ICD-10-CM Diagnosis Code B36.8Other specified superficial mycoses

ICD-10-CM Codes›A00–B99›B35-B49›B36

ICD-10-CM B36.8
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B36.8 is a billable ICD-10-CM diagnosis code for other specified superficial mycoses. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 606 through 607. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Fungal infections.

Code Identity

ICD-10-CM Code
B36.8
Billable Status
Yes — Valid for Submission
Code Describes
Other specified superficial mycoses
Short Description
Other specified superficial mycoses
Same as the full description in the CMS dataset.
Parent Code
B36
Other superficial mycoses

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB35-B49Mycoses
CategoryB36Other superficial mycoses
This CodeB36.8Other specified superficial mycoses

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Botryomycosis
  • Cutaneous aspergillosis
  • Cutaneous basidiobolomycosis
  • Cutaneous botryomycosis
  • Cutaneous hyalohyphomycosis
  • Disseminated cutaneous mycosis
  • Disseminated cutaneous mycosis caused by Fusarium
  • Disseminated cutaneous mycosis caused by Penicillium
  • Fusarium infection
  • Infection by Basidiobolus
  • Infection caused by Malassezia
  • Infection caused by Piedraia
  • Infection of skin caused by Neoscytalidium dimidiatum
  • Invasive aspergillosis
  • Invasive cutaneous aspergillosis
  • Malassezia folliculitis
  • Malassezia infection of skin
  • Neonatal cephalic pustulosis caused by Malassezia
  • Neonatal fungal infection of skin
  • Neoscytalidium dermatomycosis
  • Phaeohyphomycosis
  • Phaeohyphomycosis of skin
  • Steroid-modified tinea infection
  • Steroid-modified tinea infection of groin
  • Steroid-modified tinea infection of lower limb
  • Superficial mycosis caused by saprophytic mold
  • Tinea cruris
  • Zygomycosis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Chignon(disease)
    • Chromotrichomycosis
    • Dermatitis(eczematous)
      • fungus
        • specified type NEC
    • Dermatomycosis
      • specified type NEC
    • Disease, diseased
      • Chignon
    • Infection, infected, infective(opportunistic)
      • skin (local) (staphylococcal) (streptococcal)
        • due to fungus
          • specified type NEC
    • Infection, infected, infective(opportunistic)
      • skin (local) (staphylococcal) (streptococcal)
        • mycotic
          • specified type NEC
    • Piedra(beard) (scalp)
    • Trichomycosis
      • nodosa, nodularis

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INF004
Fungal infections
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Tinea Cruris

    fungal infection of the groin. the main causative fungus is trichophyton.

  • Cerebral Phaeohyphomycosis

    cns infections caused by neurotropic dematiaceous fungi that contain melanin in their cell walls. the infections often result in brain abscess; encephalitis; and meningitis in patients who are often immunocompetent. the common causative fungi include members cladophialophora bantiana, exophiala dermatitidis, rhinocladiella mackenziei, and ochroconis gallopavum. r. mackenziei infection is seen almost exclusively in patients from the middle east.

  • Phaeohyphomycosis

    opportunistic infections caused by the dematiaceous (darkly pigmented) mitosporic fungi of alternaria, bipolaris, cladosporium, curvularia, and exophiala. these fungi have pigmented hyphae due to melanin in the cell wall. the initial subcutaneous cyst from the infection can become systemic and spread rapidly to renal, pulmonary and cerebral systems (see cerebral phaeohyphomycosis) in an immunocompromised host.

  • Zygomycosis

    infection in humans and animals caused by fungi in the class zygomycetes. it includes mucormycosis and entomophthoramycosis. the latter is a tropical infection of subcutaneous tissue or paranasal sinuses caused by fungi in the order entomophthorales. phycomycosis, closely related to zygomycosis, describes infection with members of phycomycetes, an obsolete classification.

  • Trichophyton

    a mitosporic fungal genus and an anamorphic form of arthroderma. various species attack the skin, nails, and hair.

  • Mucormycosis

    infection in humans and animals caused by any fungus in the order mucorales (e.g., rhizopus; mucor; cunninghamella; apophysomyces; absidia; saksenaea and rhizomucor) there are many clinical types associated with infection including central nervous system, lung, gastrointestinal tract, skin, orbit and paranasal sinuses. in humans, it usually occurs as an opportunistic infection.

Patient EducationClinical

Fungal Infections

If you have ever had athlete's foot or a yeast infection, you can blame a fungus. A fungus is a primitive organism. Mushrooms, mold and mildew are examples. Fungi live in air, in soil, on plants and in water. Some live in the human body. Only about half of all types of fungi are harmful.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert B36.8 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
111.8 Dermatomycoses NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About B36.8Overview

Is B36.8 (Other superficial mycoses) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified superficial mycoses on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does B36.8 group to?

When other specified superficial mycoses is the principal diagnosis on an inpatient stay, it groups to MS-DRG 606, 607, with relative weights from 0.9064 to 1.5132 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of B36.8?

Under the General Equivalence Mappings, other specified superficial mycoses converts to ICD-9-CM 111.8 (dermatomycoses NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.