ICD-10-CM 2027
ICD-10 code for cornea acquired deformity
From the official ICD-10-CM alphabetic index entry “Deformity › cornea (acquired)”. Page updated September 29, 2026.
About coding cornea acquired deformity
The ICD-10-CM code for cornea acquired deformity is H18.70 (Unspecified corneal deformity). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on H18.70.
Within H18.7, choose H18.70 (Unspecified corneal deformity) only when documentation doesn't support a more specific option: corneal ectasia (H18.71), corneal staphyloma (H18.72), Descemetocele (H18.73) and other corneal deformities (H18.79).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent, relative weight 1.2471) and DRG 125 (Other Disorders of the Eye without MCC, relative weight 0.7702), in MDC 02 (Diseases and Disorders of the Eye), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific cornea acquired deformity codes (official index)
Common questions about cornea acquired deformity ICD-10 codes
What is the ICD-10 code for cornea acquired deformity?
- H18.70 — Unspecified corneal deformity. More specific codes apply when the documentation supports them: Q13.4, H18.79.
What is the ICD-10 code for congenital cornea acquired deformity?
- Q13.4 — Other congenital corneal malformations.
Is H18.70 billable?
- Yes. H18.70 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H18.70 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H18.70 as a principal diagnosis.
Is H18.70 a CC or MCC?
- No. H18.70 is neither a CC nor an MCC under MS-DRG v44.0.