H40.03
Anatomical narrow angle
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This code does not map to a risk-adjusting HCC in the loaded models.
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
Primary angle closure suspect
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)
Official Guidelines for H40.03
FY 2026 ›Sections that reference H40.03
- I.C.7.a.1)Assigning Glaucoma Codes
Assign as many codes from category H40, Glaucoma, as needed to identify the type of glaucoma, the affected eye, and the glaucoma stage.
- I.C.7.a.2)Bilateral glaucoma with same type and stage
… as being the same type and stage, and the classification does not provide a code for bilateral glaucoma (i.e. subcategories H40.10, and H40.20) report only one code for the type of glaucoma with the appropriate seventh character for the stage.
- I.C.7.a.3)Bilateral glaucoma stage with different types or stages
… eye is documented as having a different type, and the classification does not distinguish laterality (i.e., subcategories H40.10, and H40.20), assign one code for each type of glaucoma with the appropriate seventh character for the stage. …
Sections whose FY 2026 text names H40.03, its H40 category, or a range containing it — the chapter guidance above is the authoritative source.