D31.12 is the authoritative medical code for Benign neoplasm of left cornea. This classification is used in medical billing and clinical recording to specify the clinical criteria for benign neoplasm of left cornea (ICD-10-CM D31.12), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Benign neoplasm of left cornea is a billable ICD-10-CM diagnosis code D31.12. Excludes1 (not coded here): benign neoplasm of connective tissue of eyelid D21.0; benign neoplasm of optic nerve D33.3; benign neoplasm of skin of eyelid (D22.1-, D23.1-).
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for D31.12 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- benign neoplasm of connective tissue of eyelid D21.0
- benign neoplasm of optic nerve D33.3
- benign neoplasm of skin of eyelid (D22.1-, D23.1-)
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with D31.12?
Per official ICD-10-CM Excludes1 instructions, D31.12 must not be reported together with: benign neoplasm of connective tissue of eyelid (D21.0); benign neoplasm of optic nerve (D33.3); benign neoplasm of skin of eyelid (D22.1-, D23.1-).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to D31.12 in its code family, with their registry titles.
- D31 — Benign neoplasm of eye and adnexa
- D31.0 — Benign neoplasm of conjunctiva
- D31.00 — Benign neoplasm of unspecified conjunctiva
- D31.01 — Benign neoplasm of right conjunctiva
- D31.02 — Benign neoplasm of left conjunctiva
- D31.1 — Benign neoplasm of cornea
- D31.10 — Benign neoplasm of unspecified cornea
- D31.11 — Benign neoplasm of right cornea
- D31.2 — Benign neoplasm of retina
- D31.20 — Benign neoplasm of unspecified retina
View all 32 codes in the D31 family
Neoplasm Table Sites (2)
Anatomical sites from the official ICD-10-CM Table of Neoplasms that map to this code, with the matching behavior column.
- Neoplasm, neoplastic, cornea (limbus) — Benign
- Neoplasm, neoplastic, limbus of cornea — Benign