Q99 — ICD-10-CM Diagnosis Codes

• Q99 Other chromosome abnormalities, not elsewhere classified
• Q99.0 Chimera 46, XX/46, XY billable
• Q99.1 46, XX true hermaphrodite billable
• Q99.2 Fragile X chromosome billable
• Q99.8 Other specified chromosome abnormalities
• Q99.81 Usher syndrome
• Q99.811 Usher syndrome, type 1 billable
• Q99.812 Usher syndrome, type 2 billable
• Q99.813 Usher syndrome, type 3 billable
• Q99.818 Other Usher syndrome billable
• Q99.819 Usher syndrome, unspecified billable
• Q99.89 Other specified chromosome abnormalities billable
• Q99.9 Chromosomal abnormality, unspecified billable