All ICD10 Codes

H18

Non-Billable
ChapterH00–H59
Rankcategory
Official Description

Other disorders of cornea

Use a more specific code (1 billable, 9 non-billable)
H18.0Corneal pigmentations and depositshas subcodesH18.1Bullous keratopathyhas subcodesH18.2Other and unspecified corneal edemahas subcodesH18.3Changes of corneal membraneshas subcodesH18.4Corneal degenerationhas subcodesH18.5Hereditary corneal dystrophieshas subcodesH18.6Keratoconushas subcodesH18.7Other and unspecified corneal deformitieshas subcodesH18.8Other specified disorders of corneahas subcodesH18.9Unspecified disorder of cornea
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 7: Diseases of the Eye and Adnexa (H00-H59).

CH7 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury (trauma) of eye and orbit (S05.-)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)

Clinical Hierarchy

BillableHas subcodes
CH7Diseases of the eye and adnexa (H00-H59)
H15-H22Disorders of sclera, cornea, iris and ciliary body (H15-H22)
H18Other disorders of corneaNot billable
H18.0Corneal pigmentations and depositsSubcodes
H18.1Bullous keratopathySubcodes
H18.2Other and unspecified corneal edemaSubcodes
H18.3Changes of corneal membranesSubcodes
H18.4Corneal degenerationSubcodes
H18.5Hereditary corneal dystrophiesSubcodes
H18.6KeratoconusSubcodes
H18.7Other and unspecified corneal deformitiesSubcodes
H18.8Other specified disorders of corneaSubcodes
H18.9Unspecified disorder of corneaBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to H18:

chapterCH7
Diseases of the eye and adnexa (H00-H59)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Other disorders of cornea.

Search PCS Codes