H34.9 — Unspecified retinal vascular occlusion
Is H34.9 billable?
Yes, but H34.9 is an unspecified code. H34.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, H34.9 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting H34.9 — the more specific alternatives are listed below.
H34.9 at a glance
| Code | H34.9 |
|---|---|
| Description | Unspecified retinal vascular occlusion |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does H34.9 group to?
H34.9 sits in MDC 02 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 123Neurological Eye Disordersmedical
As a secondary diagnosis, H34.9 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is H34.9 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to H34.9. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Embolism › eye (multiple) (paradoxical)
- Obstruction, obstructed, obstructive › retinal
- Occlusion, occluded › retina, retinal › vessels
Excludes1 — never code together — inherited from H34
The conditions below can never be reported together with H34.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- amaurosis fugax (G45.3)
Excludes2 — not included here — inherited from Chapter 7
The conditions below are not part of H34.9, but a patient may have both at the same time. When documentation supports it, H34.9 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)
How long has H34.9 existed?
H34.9 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.