H05.40 ICD-10-CM Code: Unspecified enophthalmos
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.
Official Registry Overview & Definition
Unspecified enophthalmos is a non-billable ICD-10-CM category code (H05.40). A more specific billable subcode must be selected for claims submission.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for H05.40 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- congenital malformation of orbit (Q10.7)
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- open wound of eyelid (S01.1-)
- superficial injury of eyelid (S00.1-, S00.2-)
Frequently Asked Questions (FAQ) & Clinical Guidance
Can H05.40 be billed directly?
No. H05.40 (Unspecified enophthalmos) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to H05.40 in its code family, with their registry titles.
- H05.351 — Exostosis of right orbit
- H05.352 — Exostosis of left orbit
- H05.353 — Exostosis of bilateral orbits
- H05.359 — Exostosis of unspecified orbit
- H05.4 — Enophthalmos
- H05.401 — Unspecified enophthalmos, right eye
- H05.402 — Unspecified enophthalmos, left eye
- H05.403 — Unspecified enophthalmos, bilateral
- H05.409 — Unspecified enophthalmos, unspecified eye
- H05.41 — Enophthalmos due to atrophy of orbital tissue