J4B – Pulmonary mycetoma
ICD-10-CM 2027 diagnosis code · Chronic lower respiratory diseases
ICD-10-CM code
J4B
- Code
J4B(claims format:J4B)- Description
- Pulmonary mycetoma
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 10. Diseases of the respiratory system (J00-J99)
- Block
- J40-J4B Chronic lower respiratory diseases
Notes for J4B
Applicable to:
- Pulmonary fungal ball
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block J40-J4B
Excludes1 (not coded here):
- bronchitis due to chemicals, gases, fumes and vapors (J68.0)
Excludes2 (not included here):
- cystic fibrosis (E84.-)
Index terms for J4B
Entries in the ICD-10-CM alphabetic index that lead to this code:
Frequently asked questions
What is ICD-10 code J4B?
J4B is the ICD-10-CM code for pulmonary mycetoma, in the block J40-J4B (Chronic lower respiratory diseases).
Is J4B a billable code?
Yes. J4B is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.