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Compare/H50 vs H55

H50 vs H55

H50 (Other strabismus) compared with H55 (Nystagmus and other irregular eye movements), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Can these codes be reported together?

Yes, when both are documented. H50 carries an Excludes2 note covering H55: “nystagmus and other irregular eye movements (H55)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

H50Other strabismusH55Nystagmus and other irregular eye movements
Billing statusNon-billable header

Report instead: H50.00, H50.011, H50.012, H50.021, H50.022

Non-billable header

Report instead: H55.00, H55.01, H55.02, H55.03, H55.04

ClassificationH00-H59 — Diseases of the Eye and Adnexa (H00-H59)H00-H59 — Diseases of the Eye and Adnexa (H00-H59)
DefinitionOther strabismus is a non-billable ICD-10-CM category code (H50).Nystagmus and other irregular eye movements is a non-billable ICD-10-CM category code (H55).
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources