H35.423 — Microcystoid degeneration of retina, bilateral
Is H35.423 billable?
Yes — H35.423 is billable for FY2027. H35.423 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. H35.423 may be submitted for encounters from October 1, 2026 through September 30, 2027.
H35.423 at a glance
| Code | H35.423 |
|---|---|
| Description | Microcystoid degeneration of retina, bilateral |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does H35.423 group to?
H35.423 sits in MDC 02 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 124Other Disorders of the Eye with MCC or Thrombolytic Agentmedical
- 125Other Disorders of the Eye without MCCmedical
How is H35.423 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under H35.42, the nearest indexed parent of H35.423. Use them to find the family, then select the specific code.
- Degeneration, degenerative › retina › peripheral › microcystoid
Excludes1 — never code together — inherited from H35.4
The conditions below can never be reported together with H35.423 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 H35.423, but a patient may have both at the same time. When documentation supports it, H35.423 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 H35.423, but a patient may have both at the same time. When documentation supports it, H35.423 and the excluded code may both be reported.
Excludes2 — not included here — inherited from H35.4
The conditions below are not part of H35.423, but a patient may have both at the same time. When documentation supports it, H35.423 and the excluded code may both be reported.
- peripheral retinal degeneration with retinal break (H33.3-)
How long has H35.423 existed?
H35.423 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.