J4B diagnosis code · Billable category · FY2027
J4B Pulmonary mycetoma
- Billable
- New in FY2027
- MCC
- POA reported
J4B ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.
New in FY2027 (effective October 1, 2026). NCHS conversion table, previous assignment: B47.- and J98.8, B37.1, B38.0, B38.1, B38.2, B44.1 (effective 2026).
Where it sits
- CC / MCC
- MCC
- MS-DRG
- 177-179, 791, 793, 974-976
- HCC V28
- Pending
- POA
- Reported
- Code Editor
- –
- Index entries
- 2
Instructions
At J4B
Inclusion terms
- Pulmonary fungal ball
Notes that also apply
Block J40-J4B instructions (Excludes1 1, Excludes2 1): printed on the block page.
Chapter 10 instructions (Notes 1, Excludes2 9, Use additional code 7): printed on the chapter 10 page.
Index entries
NCHS Alphabetic Index. Index first, then the Tabular List.
Medicare grouping and edits
| CC / MCC | MCC |
|---|---|
| PDX exclusion list | 0203 (24 codes) |
| Appendix B | MDC 04 Diseases and Disorders of the Respiratory System, MS-DRG 177-179 (Respiratory Infections and Inflammations with MCC…); MDC 15 Newborns and Other Neonates with Conditions Originating in Perinatal Period, MS-DRG 791 (Prematurity with Major Problems…); MDC 15 Newborns and Other Neonates with Conditions Originating in Perinatal Period, MS-DRG 793 (Full Term Neonate with Major Problems…); MDC 25 Human Immunodeficiency Virus Infections, MS-DRG 974-976 (HIV with Major Related Condition with MCC…) |
| Code Editor | – |
| POA | Reported |
| HCC V28 | Pending: new in FY2027 |
MCC as a secondary diagnosis, not when the principal diagnosis is on its PDX exclusion list.
CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.