Q99.2
Q99.2: Fragile X chromosome
Billable / specific codeICD-10-CMPOA exempt
Q99.2 is a billable, specific ICD-10-CM code for fragile x chromosome. It is valid for submission on a claim.
Check Q99.2 with the rest of the claim: free scrubberInclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Fragile X syndrome
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
Q99.2 is named in 4 Medicare coverage policies: 4 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A53060Billing and Coding: Ophthalmology: Extended Ophthalmoscopy and Fundus Photography
- A56726Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography)
- A57071Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography)
- A57204Billing and Coding: MRI and CT Scans of the Head and Neck
Alphabetic index entries that lead here
- Fragile, fragility›X chromosome
- Syndrome›fragile X
Code history
Unchanged in every release from FY2024 to FY2027.