ICD-10-CM 2027 diagnosis code

H05.40Unspecified enophthalmos

Not billable — use a more specific code

H05.40 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Looking up by condition? See ICD-10 code for Enophthalmos.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About H05.40

H05.40 is the ICD-10-CM diagnosis code for unspecified enophthalmos. It belongs to category H05 (disorders of orbit), block H00-H05 (disorders of eyelid, lacrimal system and orbit) and chapter 7 (diseases of the eye and adnexa). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within H05.4, choose H05.40 (Unspecified enophthalmos) only when documentation doesn't support a more specific option: due to atrophy of orbital tissue (H05.41) and due to trauma or surgery (H05.42).

To report this condition, pick the subcode that matches the documentation: H05.401 (right eye), H05.402 (left eye), H05.403 (bilateral) and H05.409 (unspecified eye).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under H05.40

Notes that apply from higher levels

Instructions written at a parent level also apply to H05.40.

› From H05 Disorders of orbit

Excludes1

congenital malformation of orbit (Q10.7)

Broader instructions also apply from H00-H05 Disorders of eyelid, lacrimal system and orbit and Chapter 7: Diseases of the eye and adnexa.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to H05.40.

Enophthalmos

Code history

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2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about H05.40

Is H05.40 billable?: No. H05.40 is a header code. Report one of its more specific subcodes instead.