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H40.112Non-billableSave

H40.112 - Primary open-angle glaucoma, left eye

ICD-10-CM Chapter 7: Diseases of the eye and adnexa · H40-H42 Glaucoma (H40-H42) · Subcategory of H40.11 · FY2027

Coding Guidance

H40.112 requires a 7th character. Report the code below that matches the documentation, for example 0 for stage unspecified, 1 for mild stage, 2 for moderate stage.

7th Character

One of the following 7th characters is to be assigned to each code in subcategory H40.11 to designate the stage of glaucoma

Includes, Excludes and Coding Notes

Excludes 1 — Not Coded HereFrom H40

Mutually exclusive: these conditions are never reported together with this code.

  • absolute glaucoma (H44.51-)
  • congenital glaucoma (Q15.0)
  • traumatic glaucoma due to birth injury (P15.3)
Excludes 2 — Not Included HereFrom Chapter H00-H59

Not part of this code; report both codes when the patient has both conditions.

  • 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)
NotesFrom Chapter H00-H59

Instructional notes from the ICD-10-CM tabular list.

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

More Specific Codes (5)

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→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with H40.112.