H35.42 — Microcystoid degeneration of retina
Is H35.42 billable?
No — H35.42 is a non-billable header code. H35.42 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 4 billable codes beneath H35.42.
H35.42 at a glance
| Code | H35.42 |
|---|---|
| Description | Microcystoid degeneration of retina |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is H35.42 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to H35.42. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Degeneration, degenerative › retina › peripheral › microcystoid
Excludes1 — never code together — inherited from H35.4
The conditions below can never be reported together with H35.42 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- hereditary retinal degeneration (dystrophy) (H35.5-)
Excludes2 — not included here — inherited from Chapter 7
The conditions below are not part of H35.42, but a patient may have both at the same time. When documentation supports it, H35.42 and the excluded code may both be reported.
- 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)
Excludes2 — not included here — inherited from H35
The conditions below are not part of H35.42, but a patient may have both at the same time. When documentation supports it, H35.42 and the excluded code may both be reported.
Excludes2 — not included here — inherited from H35.4
The conditions below are not part of H35.42, but a patient may have both at the same time. When documentation supports it, H35.42 and the excluded code may both be reported.
- peripheral retinal degeneration with retinal break (H33.3-)
What codes fall under H35.42? (4)
How long has H35.42 existed?
H35.42 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the H35.4 family? (6)
- H35.40Unspecified peripheral retinal degeneration
- H35.41Lattice degeneration of retinanot billable
- H35.43Paving stone degeneration of retinanot billable
- H35.44Age-related reticular degeneration of retinanot billable
- H35.45Secondary pigmentary degenerationnot billable
- H35.46Secondary vitreoretinal degenerationnot billable