H40.4 — Glaucoma secondary to eye inflammation
Is H40.4 billable?
No — H40.4 is a non-billable header code. H40.4 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 20 billable codes beneath H40.4.
Billable codes under this header
- H40.40X0Glaucoma secondary to eye inflammation, unspecified eye, stage unspecified
- H40.40X1Glaucoma secondary to eye inflammation, unspecified eye, mild stage
- H40.40X2Glaucoma secondary to eye inflammation, unspecified eye, moderate stage
- H40.40X3Glaucoma secondary to eye inflammation, unspecified eye, severe stage
- H40.40X4Glaucoma secondary to eye inflammation, unspecified eye, indeterminate stage
- H40.41X0Glaucoma secondary to eye inflammation, right eye, stage unspecified
- H40.41X1Glaucoma secondary to eye inflammation, right eye, mild stage
- H40.41X2Glaucoma secondary to eye inflammation, right eye, moderate stage
- H40.41X3Glaucoma secondary to eye inflammation, right eye, severe stage
- H40.41X4Glaucoma secondary to eye inflammation, right eye, indeterminate stage
- H40.42X0Glaucoma secondary to eye inflammation, left eye, stage unspecified
- H40.42X1Glaucoma secondary to eye inflammation, left eye, mild stage
- H40.42X2Glaucoma secondary to eye inflammation, left eye, moderate stage
- H40.42X3Glaucoma secondary to eye inflammation, left eye, severe stage
- H40.42X4Glaucoma secondary to eye inflammation, left eye, indeterminate stage
- H40.43X0Glaucoma secondary to eye inflammation, bilateral, stage unspecified
- H40.43X1Glaucoma secondary to eye inflammation, bilateral, mild stage
- H40.43X2Glaucoma secondary to eye inflammation, bilateral, moderate stage
- H40.43X3Glaucoma secondary to eye inflammation, bilateral, severe stage
- H40.43X4Glaucoma secondary to eye inflammation, bilateral, indeterminate stage
H40.4 at a glance
| Code | H40.4 |
|---|---|
| Description | Glaucoma secondary to eye inflammation |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is H40.4 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to H40.4. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Glaucoma › secondary › inflammation
Code also
Two codes may be needed to describe the condition fully. Whether H40.4 is sequenced first depends on the reason for the encounter.
- underlying condition
Excludes1 — never code together — inherited from H40
The conditions below can never be reported together with H40.4 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 H40.4, but a patient may have both at the same time. When documentation supports it, H40.4 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 H40.4? (4)
How long has H40.4 existed?
H40.4 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 conditions are coded to H40.4?
What other codes are in the H40 family? (8)
- H40.0Glaucoma suspectnot billable
- H40.1Open-angle glaucomanot billable
- H40.2Primary angle-closure glaucomanot billable
- H40.3Glaucoma secondary to eye traumanot billable
- H40.5Glaucoma secondary to other eye disordersnot billable
- H40.6Glaucoma secondary to drugsnot billable
- H40.8Other glaucomanot billable
- H40.9Unspecified glaucoma