Q90 — Down syndrome
Is Q90 billable?
No — Q90 is a non-billable header code. Q90 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 Q90.
Q90 at a glance
| Code | Q90 |
|---|---|
| Description | Down syndrome |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Use additional code
Report an additional code alongside Q90 to fully describe the condition. Q90 is sequenced first.
- code(s) to identify any associated degree of intellectual disabilities (F70-F79)
Code also
Two codes may be needed to describe the condition fully. Whether Q90 is sequenced first depends on the reason for the encounter.
- associated physical condition(s), such as atrioventricular septal defect (Q21.2-)
Excludes2 — not included here — inherited from Chapter 17
The conditions below are not part of Q90, but a patient may have both at the same time. When documentation supports it, Q90 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
Excludes2 — not included here — inherited from Q90-Q99
The conditions below are not part of Q90, but a patient may have both at the same time. When documentation supports it, Q90 and the excluded code may both be reported.
- mitochondrial metabolic disorders (E88.4-)
What codes fall under Q90? (4)
How long has Q90 existed?
Q90 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.