H40.1231
Low-tension glaucoma, bilateral, mild stage
HCC risk adjustment mapping
RxHCC V08
Glaucoma, Open-Angle or Moderate/Severe Stage
Other Non-Acute Glaucoma
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
One of the following 7th characters is to be assigned to each code in subcategory H40.12 to designate the stage of glaucoma
| Character | Meaning |
|---|---|
| 0 | stage unspecified |
| 1 | mild stage |
| 2 | moderate stage |
| 3 | severe stage |
| 4 | indeterminate stage |
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)
Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition
Official Guidelines for H40.1231
FY 2026 ›Sections that reference H40.1231
- 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 H40.1231, its H40 category, or a range containing it — the chapter guidance above is the authoritative source.