E84 — Cystic fibrosis
Is E84 billable?
No — E84 is a non-billable header code. E84 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 5 billable codes beneath E84.
E84 at a glance
| Code | E84 |
|---|---|
| Description | Cystic fibrosis |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Code also
Two codes may be needed to describe the condition fully. Whether E84 is sequenced first depends on the reason for the encounter.
- exocrine pancreatic insufficiency (K86.81)
Includes
Conditions classified to E84.
- mucoviscidosis
Excludes1 — never code together — inherited from Chapter 4
The conditions below can never be reported together with E84 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 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, but a patient may have both at the same time. When documentation supports it, E84 and the excluded code may both be reported.
- Ehlers-Danlos syndromes (Q79.6-)
What codes fall under E84? (4)
How long has E84 existed?
E84 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?
ICD-10-CM declares these codes mutually exclusive with E84 — exactly one of each pair can be correct for a given encounter.