H33.1 — Retinoschisis and retinal cysts
Is H33.1 billable?
No — H33.1 is a non-billable header code. H33.1 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 16 billable codes beneath H33.1.
Billable codes under this header
- H33.101Unspecified retinoschisis, right eye
- H33.102Unspecified retinoschisis, left eye
- H33.103Unspecified retinoschisis, bilateral
- H33.109Unspecified retinoschisis, unspecified eye
- H33.111Cyst of ora serrata, right eye
- H33.112Cyst of ora serrata, left eye
- H33.113Cyst of ora serrata, bilateral
- H33.119Cyst of ora serrata, unspecified eye
- H33.121Parasitic cyst of retina, right eye
- H33.122Parasitic cyst of retina, left eye
- H33.123Parasitic cyst of retina, bilateral
- H33.129Parasitic cyst of retina, unspecified eye
- H33.191Other retinoschisis and retinal cysts, right eye
- H33.192Other retinoschisis and retinal cysts, left eye
- H33.193Other retinoschisis and retinal cysts, bilateral
- H33.199Other retinoschisis and retinal cysts, unspecified eye
H33.1 at a glance
| Code | H33.1 |
|---|---|
| Description | Retinoschisis and retinal cysts |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with H33.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from H33
The conditions below can never be reported together with H33.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 7
The conditions below are not part of H33.1, but a patient may have both at the same time. When documentation supports it, H33.1 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)
What codes fall under H33.1? (4)
How long has H33.1 existed?
H33.1 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.
Which codes are confused with H33.1?
ICD-10-CM declares these codes mutually exclusive with H33.1 — exactly one of each pair can be correct for a given encounter.