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ICD-10-CM 2027 diagnosis code

H18.04Kayser-Fleischer ring

Not billable — use a more specific code

H18.04 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 Fleischer ring, ICD-10 code for Kayser-Fleischer ring.

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 H18.04

H18.04 is the ICD-10-CM diagnosis code for Kayser-Fleischer ring. It belongs to category H18 (other disorders of cornea), block H15-H22 (disorders of sclera, cornea, iris and ciliary body) 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 H18.0 (corneal pigmentations and deposits), H18.04 is specifically for Kayser-Fleischer ring. Related codes cover unspecified corneal deposit (H18.00), anterior corneal pigmentations (H18.01), Argentous corneal deposits (H18.02), corneal deposits in metabolic disorders (H18.03), posterior corneal pigmentations (H18.05) and stromal corneal pigmentations (H18.06).

To report this condition, pick the subcode that matches the documentation: H18.041 (right eye), H18.042 (left eye), H18.043 (bilateral) and H18.049 (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 H18.04

Coding notes

Code alsoTwo codes may be needed; sequencing depends on circumstances
  • associated Wilson's disease (E83.01)

Notes that apply from higher levels

Instructions written at a parent level also apply to H18.04.

Broader instructions also apply from Chapter 7: Diseases of the eye and adnexa.

Alphabetic index entries

5 entries

Terms in the official ICD-10-CM index that lead to H18.04.

Codes whose notes reference H18.04

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about H18.04

Is H18.04 billable?

No. H18.04 is a header code. Report one of its more specific subcodes instead.