H40.52X2 — Glaucoma secondary to other eye disorders, left eye, moderate stage
Is H40.52X2 billable?
Yes — H40.52X2 is billable for FY2027. H40.52X2 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. H40.52X2 may be submitted for encounters from October 1, 2026 through September 30, 2027.
H40.52X2 at a glance
| Code | H40.52X2 |
|---|---|
| Description | Glaucoma secondary to other eye disorders, left eye, moderate stage |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "2" | moderate stage |
What does the 7th character "2" mean in H40.52X2?
In H40.52X2, the 7th character 2 means moderate stage. The 7th character is required for H40.52X2 to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does H40.52X2 group to?
H40.52X2 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 H40.52X2 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under H40.5, the nearest indexed parent of H40.52X2. Use them to find the family, then select the specific code.
- Glaucoma › secondary
Excludes1 — never code together — inherited from H40
The conditions below can never be reported together with H40.52X2 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 H40.52X2, but a patient may have both at the same time. When documentation supports it, H40.52X2 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)
Code also — inherited from H40.5
Two codes may be needed to describe the condition fully. Whether H40.52X2 is sequenced first depends on the reason for the encounter.
- underlying eye disorder
How long has H40.52X2 existed?
H40.52X2 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.