ICD-10-CM Alphabetic Index · FY 2026 17 Entries
Open in the ICD-10-CM Index ICD-10-CM
The main term Open, opening carries 17 index entries pointing to 6 ICD-10-CM codes. Every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.
✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
17
Index Entries
6
Codes Referenced
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Default Code
O
Letter
17 of 17 shown
ICD-10-CM
Index Entries Under Open 17 entries · 6 codes
Open, opening
abnormal, organ or site, congenital see Imperfect, closure
angle with
borderline
findings
high risk H40.02- Non-billable
low risk H40.01- Non-billable
intraocular pressure H40.00- Non-billable
cupping of discs H40.01- Non-billable
glaucoma (primary) see Glaucoma, open angle
bite
anterior M26.220
posterior M26.221
false see Imperfect, closure
margin on tooth restoration K08.51
restoration margins of tooth K08.51
wound see Wound, open
The info icon previews the code's description and billable status; the code link opens its full page with all notations.
Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.
