Q61.9 vs Q85.8
Q61.9 (Cystic kidney disease, unspecified) compared with Q85.8 (Other phakomatoses, not elsewhere classified), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. Q85.8 carries an Excludes1 note covering Q61.9: “Meckel-Gruber syndrome (Q61.9)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| Q61.9Cystic kidney disease, unspecified | Q85.8Other phakomatoses, not elsewhere classified | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | Q00-Q99 — Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99) | Q00-Q99 — Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99) |
| Definition | Cystic kidney disease, unspecified is a billable ICD-10-CM diagnosis code (Q61.9). | Other phakomatoses, not elsewhere classified is a non-billable ICD-10-CM category code (Q85.8). |
| Includes | Meckel-Gruber syndrome | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources