Q85.8 — Other phakomatoses, not elsewhere classified
Is Q85.8 billable?
No — Q85.8 is a non-billable header code. Q85.8 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 4 billable codes beneath Q85.8.
Q85.8 at a glance
| Code | Q85.8 |
|---|---|
| Description | Other phakomatoses, not elsewhere classified |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with Q85.8 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- Meckel-Gruber syndrome (Q61.9)
Excludes1 — never code together — inherited from Q85
The conditions below can never be reported together with Q85.8 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 Chapter 17
The conditions below are not part of Q85.8, but a patient may have both at the same time. When documentation supports it, Q85.8 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
What codes fall under Q85.8? (4)
How long has Q85.8 existed?
Q85.8 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
- FY2023: Q85.8 stopped being billable
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 Q85.8?
ICD-10-CM declares these codes mutually exclusive with Q85.8 — exactly one of each pair can be correct for a given encounter.