H59 vs Z96.1
H59 and Z96.1 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
Intraoperative and postprocedural complications and disorders of eye and adnexa, not elsewhere classified
- Chapter 7
- Diseases of the eye and adnexa
- Section
- H59
Presence of intraocular lens
- Chapter 21
- Factors influencing health status and contact with health services
- Section
- Z77-Z99
- Presence of pseudophakia
- Pseudophakia
- Presence › intraocular lens (of)
- Replacement by artificial or mechanical device or prosthesis of › lens
- Status › pseudophakia (post)
- Presence › artificial › lens (of)
These two codes sit in different chapters of the Tabular List, which is usually the clearest signal that they describe different underlying processes rather than different degrees of the same one.
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027