E84.0 — Cystic fibrosis with pulmonary manifestations
Is E84.0 billable?
Yes — E84.0 is billable for FY2027. E84.0 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. E84.0 may be submitted for encounters from October 1, 2026 through September 30, 2027.
E84.0 at a glance
| Code | E84.0 |
|---|---|
| Description | Cystic fibrosis with pulmonary manifestations |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does E84.0 group to?
E84.0 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, E84.0 is a major complication or comorbidity (MCC), which can move a stay into a higher-paying DRG.
How is E84.0 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to E84.0. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Fibrosis, fibrotic › cystic › with › pulmonary manifestations
Use additional code
Report an additional code alongside E84.0 to fully describe the condition. E84.0 is sequenced first.
- code to identify any infectious organism present, such as:
- Pseudomonas (B96.5)
Excludes1 — never code together — inherited from Chapter 4
The conditions below can never be reported together with E84.0 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- transitory endocrine and metabolic disorders specific to newborn (P70-P74)
Excludes1 — never code together — inherited from E70-E88
The conditions below can never be reported together with E84.0 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from E70-E88
The conditions below are not part of E84.0, but a patient may have both at the same time. When documentation supports it, E84.0 and the excluded code may both be reported.
- Ehlers-Danlos syndromes (Q79.6-)
Code also — inherited from E84
Two codes may be needed to describe the condition fully. Whether E84.0 is sequenced first depends on the reason for the encounter.
- exocrine pancreatic insufficiency (K86.81)
How long has E84.0 existed?
E84.0 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with E84.0?
ICD-10-CM declares these codes mutually exclusive with E84.0 — exactly one of each pair can be correct for a given encounter.