J4B — Pulmonary mycetoma
Is J4B billable?
Yes — J4B is billable for FY2027. J4B is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. J4B may be submitted for encounters from October 1, 2026 through September 30, 2027. J4B is new in FY2027.
J4B at a glance
| Code | J4B |
|---|---|
| Description | Pulmonary mycetoma |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| FY2027 change | New in FY2027 |
Which MS-DRGs does J4B group to?
J4B sits in MDC 04 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 177Respiratory Infections and Inflammations with MCCmedical
- 178Respiratory Infections and Inflammations with CCmedical
- 179Respiratory Infections and Inflammations without CC/MCCmedical
As a secondary diagnosis, J4B is a major complication or comorbidity (MCC), which can move a stay into a higher-paying DRG.
How is J4B listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to J4B. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Ball, pulmonary fungal
- Mycetoma › pulmonary
Code also
Two codes may be needed to describe the condition fully. Whether J4B is sequenced first depends on the reason for the encounter.
Inclusion terms
Alternative wording in documentation that is classified to J4B.
- Pulmonary fungal ball
Excludes1 — never code together — inherited from J40-J4B
The conditions below can never be reported together with J4B on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- bronchitis due to chemicals, gases, fumes and vapors (J68.0)
Use additional code — inherited from Chapter 10
Report an additional code alongside J4B to fully describe the condition. J4B is sequenced first.
Excludes2 — not included here — inherited from Chapter 10
The conditions below are not part of J4B, but a patient may have both at the same time. When documentation supports it, J4B and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- smoke inhalation (T59.81-)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Excludes2 — not included here — inherited from J40-J4B
The conditions below are not part of J4B, but a patient may have both at the same time. When documentation supports it, J4B and the excluded code may both be reported.
- cystic fibrosis (E84.-)