DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

H46 Optic neuritis

  • Header · not billable

H46 is not billable. The category heads 12 billable codes in FY2027, grouped under 6 subdivisions.

Index → code

  • Papillitis → H46.00
  • Papillitisoptic → H46.0-
  • Neuritis (rheumatoid)optic (nerve) (hereditary) (sympathetic) → H46.9

Where it sits

  1. Chapter 7 Diseases of the eye and adnexa (H00-H59)
  2. H46-H47 Disorders of optic nerve and visual pathways (H46-H47)
  3. H46 Optic neuritis
Billable codes
12
Subdivisions
6
CC / MCC codes
10 / 0
HCC V28 codes
0
New FY2027
0
Index entries
7

Codes in H46

  1. H46.0
    Optic papillitis
    Header
  2. H46.00
    Optic papillitis, unspecified eye
    BillableCC
  3. H46.01
    Optic papillitis, right eye
    BillableCC
  4. H46.02
    Optic papillitis, left eye
    BillableCC
  5. H46.03
    Optic papillitis, bilateral
    BillableCC
  6. H46.1
    Retrobulbar neuritis
    Header
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Retrobulbar neuritis NOS

    Excludes1

    • syphilitic retrobulbar neuritis (A52.15) A52.15
  7. H46.10
    Retrobulbar neuritis, unspecified eye
    BillableCC
  8. H46.11
    Retrobulbar neuritis, right eye
    BillableCC
  9. H46.12
    Retrobulbar neuritis, left eye
    BillableCC
  10. H46.13
    Retrobulbar neuritis, bilateral
    BillableCC
  11. H46.2
    Nutritional optic neuropathy
    Billable
  12. H46.3
    Toxic optic neuropathy
    Billable
    Code first 1

    Code first

    • (T51-T65) to identify cause T51 T65
  13. H46.8
    Other optic neuritis
    BillableCC
  14. H46.9
    Unspecified optic neuritis
    BillableCC

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At H46

Excludes2

  • ischemic optic neuropathy (H47.01-) H47.01
  • neuromyelitis optica [Devic] (G36.0) G36.0

Notes that also apply

Chapter 7 instructions (Notes 1, Excludes2 11): printed on the chapter 7 page.

Index entries

  • Papillitis → H46.00
  • Papillitisoptic → H46.0-
  • Neuritis (rheumatoid)optic (nerve) (hereditary) (sympathetic) → H46.9
  • Neuritis (rheumatoid)optic (nerve) (hereditary) (sympathetic)retrobulbar → H46.1-
  • Neuritis (rheumatoid)optic (nerve) (hereditary) (sympathetic)nutritional → H46.2
  • Neuritis (rheumatoid)optic (nerve) (hereditary) (sympathetic)toxic → H46.3
  • Neuritis (rheumatoid)optic (nerve) (hereditary) (sympathetic)specified type NEC → H46.8

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy