B00.51 vs H20.0
B00.51 (Herpesviral iridocyclitis) compared with H20.0 (Acute and subacute iridocyclitis), 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. H20.0 carries an Excludes1 note covering B00.51: “iridocyclitis, iritis, uveitis (due to) (in) herpes (simplex) (B00.51)”
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
| B00.51Herpesviral iridocyclitis | H20.0Acute and subacute iridocyclitis | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) |
| Definition | Herpesviral iridocyclitis is a billable ICD-10-CM diagnosis code (B00.51). | Acute and subacute iridocyclitis is a non-billable ICD-10-CM category code (H20.0). |
| Includes | Herpesviral iritis Herpesviral uveitis, anterior | Acute anterior uveitis Acute cyclitis Acute iritis Subacute anterior uveitis |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources