H40.1 — Open-angle glaucoma
Not billable
Is H40.1 billable?
No — H40.1 is a non-billable header code. H40.1 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 60 billable codes beneath H40.1.
Billable codes under this header
- H40.10X0Unspecified open-angle glaucoma, stage unspecified
- H40.10X1Unspecified open-angle glaucoma, mild stage
- H40.10X2Unspecified open-angle glaucoma, moderate stage
- H40.10X3Unspecified open-angle glaucoma, severe stage
- H40.10X4Unspecified open-angle glaucoma, indeterminate stage
- H40.151Residual stage of open-angle glaucoma, right eye
- H40.152Residual stage of open-angle glaucoma, left eye
- H40.153Residual stage of open-angle glaucoma, bilateral
- H40.159Residual stage of open-angle glaucoma, unspecified eye
- H40.1110Primary open-angle glaucoma, right eye, stage unspecified
- H40.1111Primary open-angle glaucoma, right eye, mild stage
- H40.1112Primary open-angle glaucoma, right eye, moderate stage
- H40.1113Primary open-angle glaucoma, right eye, severe stage
- H40.1114Primary open-angle glaucoma, right eye, indeterminate stage
- H40.1120Primary open-angle glaucoma, left eye, stage unspecified
- H40.1121Primary open-angle glaucoma, left eye, mild stage
- H40.1122Primary open-angle glaucoma, left eye, moderate stage
- H40.1123Primary open-angle glaucoma, left eye, severe stage
- H40.1124Primary open-angle glaucoma, left eye, indeterminate stage
- H40.1130Primary open-angle glaucoma, bilateral, stage unspecified
- H40.1131Primary open-angle glaucoma, bilateral, mild stage
- H40.1132Primary open-angle glaucoma, bilateral, moderate stage
- H40.1133Primary open-angle glaucoma, bilateral, severe stage
- H40.1134Primary open-angle glaucoma, bilateral, indeterminate stage
- H40.1190Primary open-angle glaucoma, unspecified eye, stage unspecified
- H40.1191Primary open-angle glaucoma, unspecified eye, mild stage
- H40.1192Primary open-angle glaucoma, unspecified eye, moderate stage
- H40.1193Primary open-angle glaucoma, unspecified eye, severe stage
- H40.1194Primary open-angle glaucoma, unspecified eye, indeterminate stage
- H40.1210Low-tension glaucoma, right eye, stage unspecified
- H40.1211Low-tension glaucoma, right eye, mild stage
- H40.1212Low-tension glaucoma, right eye, moderate stage
- H40.1213Low-tension glaucoma, right eye, severe stage
- H40.1214Low-tension glaucoma, right eye, indeterminate stage
- H40.1220Low-tension glaucoma, left eye, stage unspecified
- H40.1221Low-tension glaucoma, left eye, mild stage
- H40.1222Low-tension glaucoma, left eye, moderate stage
- H40.1223Low-tension glaucoma, left eye, severe stage
- H40.1224Low-tension glaucoma, left eye, indeterminate stage
- H40.1230Low-tension glaucoma, bilateral, stage unspecified
- H40.1231Low-tension glaucoma, bilateral, mild stage
- H40.1232Low-tension glaucoma, bilateral, moderate stage
- H40.1233Low-tension glaucoma, bilateral, severe stage
- H40.1234Low-tension glaucoma, bilateral, indeterminate stage
- H40.1290Low-tension glaucoma, unspecified eye, stage unspecified
- H40.1291Low-tension glaucoma, unspecified eye, mild stage
- H40.1292Low-tension glaucoma, unspecified eye, moderate stage
- H40.1293Low-tension glaucoma, unspecified eye, severe stage
- H40.1294Low-tension glaucoma, unspecified eye, indeterminate stage
- H40.1310Pigmentary glaucoma, right eye, stage unspecified
- H40.1311Pigmentary glaucoma, right eye, mild stage
- H40.1312Pigmentary glaucoma, right eye, moderate stage
- H40.1313Pigmentary glaucoma, right eye, severe stage
- H40.1314Pigmentary glaucoma, right eye, indeterminate stage
- H40.1320Pigmentary glaucoma, left eye, stage unspecified
- H40.1321Pigmentary glaucoma, left eye, mild stage
- H40.1322Pigmentary glaucoma, left eye, moderate stage
- H40.1323Pigmentary glaucoma, left eye, severe stage
- H40.1324Pigmentary glaucoma, left eye, indeterminate stage
- H40.1330Pigmentary glaucoma, bilateral, stage unspecified
H40.1 at a glance
| Code | H40.1 |
|---|---|
| Description | Open-angle glaucoma |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together — inherited from H40
The conditions below can never be reported together with H40.1 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 H40.1, but a patient may have both at the same time. When documentation supports it, H40.1 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 H40.1? (6)
How long has H40.1 existed?
H40.1 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.
What other codes are in the H40 family? (8)
- H40.0Glaucoma suspectnot billable
- H40.2Primary angle-closure glaucomanot billable
- H40.3Glaucoma secondary to eye traumanot billable
- H40.4Glaucoma secondary to eye inflammationnot billable
- H40.5Glaucoma secondary to other eye disordersnot billable
- H40.6Glaucoma secondary to drugsnot billable
- H40.8Other glaucomanot billable
- H40.9Unspecified glaucoma