H40.1191

Primary open-angle glaucoma, unspecified eye, mild stage

Billable / specific

H40.1191 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Includes (from H40)

  • Note: Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition

Excludes1

Not coded here — never report together with this code.

  • absolute glaucoma (H44.51-) (from H40)
  • congenital glaucoma (Q15.0) (from H40)
  • traumatic glaucoma due to birth injury (P15.3) (from H40)

Excludes2

Not included here — may be reported together when both conditions exist.

  • certain conditions originating in the perinatal period (P04-P96) (from H40)
  • certain infectious and parasitic diseases (A00-B99) (from H40)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A) (from H40)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from H40)
  • diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-) (from H40)
  • endocrine, nutritional and metabolic diseases (E00-E88) (from H40)
  • injury (trauma) of eye and orbit (S05.-) (from H40)
  • injury, poisoning and certain other consequences of external causes (S00-T88) (from H40)
  • neoplasms (C00-D49) (from H40)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from H40)
  • syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71) (from H40)

7th character

The 7th character values that apply to this code (defined at H40.11). Use the placeholder "X" for missing positions.

CharacterMeaning
0stage unspecified
1mild stage
2moderate stage
3severe stage
4indeterminate stage

Parent code

  • H40.119Primary open-angle glaucoma, unspecified eyeNeeds 7th char

Related codes

  • H40.1190Primary open-angle glaucoma, unspecified eye, stage unspecifiedBillable
  • H40.1192Primary open-angle glaucoma, unspecified eye, moderate stageBillable
  • H40.1193Primary open-angle glaucoma, unspecified eye, severe stageBillable
  • H40.1194Primary open-angle glaucoma, unspecified eye, indeterminate stageBillable

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