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H18Non-billableSave

H18 - Other disorders of cornea

ICD-10-CM Chapter 7: Diseases of the eye and adnexa · H15-H22 Disorders of sclera, cornea, iris and ciliary body (H15-H22) · Top-level category · FY2027

Coding Guidance

H18 is a non-billable heading. Report one of the 10 more specific codes below.

Includes, Excludes and Coding Notes

Excludes 2 — Not Included HereFrom Chapter H00-H59

Not part of this code; report both codes when the patient has both conditions.

  • 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)
NotesFrom Chapter H00-H59

Instructional notes from the ICD-10-CM tabular list.

  • Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition

More Specific Codes (10)

H18.0Corneal pigmentations and deposits→H18.1Bullous keratopathy→H18.2Other and unspecified corneal edema→H18.3Changes of corneal membranes→H18.4Corneal degeneration→H18.5Hereditary corneal dystrophies→H18.6Keratoconus→H18.7Other and unspecified corneal deformities→H18.8Other specified disorders of cornea→H18.9Unspecified disorder of cornea→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with H18.