All ICD10 Codes

H40

Non-Billable
ChapterH00–H59
Rankcategory
Official Description

Glaucoma

Use a more specific code (1 billable, 8 non-billable)
H40.0Glaucoma suspecthas subcodesH40.1Open-angle glaucomahas subcodesH40.2Primary angle-closure glaucomahas subcodesH40.3Glaucoma secondary to eye traumahas subcodesH40.4Glaucoma secondary to eye inflammationhas subcodesH40.5Glaucoma secondary to other eye disordershas subcodesH40.6Glaucoma secondary to drugshas subcodesH40.8Other glaucomahas subcodesH40.9Unspecified glaucoma
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 7: Diseases of the Eye and Adnexa (H00-H59).

CH7 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • 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)

Instructional Notes

Excludes1(Not coded here. Use a different code.)
  • absolute glaucoma (H44.51-)
  • congenital glaucoma (Q15.0)
  • traumatic glaucoma due to birth injury (P15.3)

Clinical Hierarchy

BillableHas subcodes
CH7Diseases of the eye and adnexa (H00-H59)
H40-H42Glaucoma (H40-H42)
H40GlaucomaNot billable
H40.0Glaucoma suspectSubcodes
H40.1Open-angle glaucomaSubcodes
H40.2Primary angle-closure glaucomaSubcodes
H40.3Glaucoma secondary to eye traumaSubcodes
H40.4Glaucoma secondary to eye inflammationSubcodes
H40.5Glaucoma secondary to other eye disordersSubcodes
H40.6Glaucoma secondary to drugsSubcodes
H40.8Other glaucomaSubcodes
H40.9Unspecified glaucomaBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to H40:

chapterCH7
Diseases of the eye and adnexa (H00-H59)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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