ICD-10-CM B49 is the diagnosis code for Unspecified mycosis. This code falls under the section "Mycoses" within Chapter 1 — Certain infectious and parasitic diseases (A00-B99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Understanding where B49 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, B49 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
B49 is the ICD-10-CM diagnosis code for "Unspecified mycosis". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
B49 is located in Section B35-B49 — "Mycoses" within Chapter 1 of the ICD-10-CM Tabular List.
Use B49 when the patients documented diagnosis matches "Unspecified mycosis" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Unspecified mycosis is B49.
Yes, B49 can be used as a primary diagnosis code since it is billable and specific.
B49 is in Chapter 1 of the ICD-10-CM Tabular List.
Yes, B49 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.