H42
Glaucoma in diseases classified elsewhere
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 15 never code together
H42code
H00-H59chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)E09.3-E10.3-E11.3-E13.3-
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury (trauma) of eye and orbit (S05.-)S05.-
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
- syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)A50.01A50.3-A51.43A52.71
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 8
H42code
Code first
- underlying condition, such as:
- amyloidosis (E85.-)E85.-E85.-E85.-
- aniridia (Q13.1)Q13.1Q13.1Q13.1
- glaucoma (in) diabetes mellitus (E08.39, E09.39, E10.39, E11.39, E13.39)E08.39E08.39E08.39E09.39E09.39E09.39E10.39E10.39E10.39E11.39E11.39E11.39E13.39E13.39E13.39
- Lowe's syndrome (E72.03)E72.03E72.03E72.03
- Rieger anomaly (Q13.81)Q13.81Q13.81Q13.81
- specified metabolic disorder (E70-E88)E70-E88E70-E88E70-E88
H00-H59chapter
Notes
- Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition
Index entries leading here filed at null
No alphabetic index entry points at this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.