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ICD-10-CM 2027 diagnosis code

A39.82Meningococcal retrobulbar neuritis

✓ Billable / specificCC — complication/comorbidity

A39.82 is a valid, billable ICD-10-CM code for meningococcal retrobulbar neuritis. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About A39.82

A39.82 is the ICD-10-CM diagnosis code for meningococcal retrobulbar neuritis. It belongs to category A39 (meningococcal infection), block A30-A49 (other bacterial diseases) and chapter 1 (certain infectious and parasitic diseases). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within A39.8 (other meningococcal infections), A39.82 is specifically for meningococcal retrobulbar neuritis. Related codes cover meningococcal encephalitis (A39.81), meningococcal arthritis (A39.83), Postmeningococcal arthritis (A39.84) and other meningococcal infections (A39.89).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 123 (Neurological Eye Disorders, relative weight 0.822), DRG 791 (Prematurity with Major Problems, relative weight 4.1075) and DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), in MDC 02 (Diseases and Disorders of the Eye) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 036.81 (meningococcal optic neuritis).

Notes that apply from higher levels

Instructions written at a parent level also apply to A39.82.

Broader instructions also apply from Chapter 1: Certain infectious and parasitic diseases.

Alphabetic index entries

3 entries

Terms in the official ICD-10-CM index that lead to A39.82.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 02 · Diseases and Disorders of the Eye

MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period

MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period

ICD-9-CM equivalent

Converter →
  • 036.81Meningococcal optic neuritisapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about A39.82

Is A39.82 billable?

Yes. A39.82 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can A39.82 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict A39.82 as a principal diagnosis.

Is A39.82 a CC or MCC?

A39.82 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does A39.82 group to?

A39.82 is used in the MS-DRG v44.0 logic for MS-DRG 123 (Neurological Eye Disorders), MS-DRG 791 (Prematurity with Major Problems) and MS-DRG 793 (Full Term Neonate with Major Problems). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for A39.82?

The CMS General Equivalence Mappings map A39.82 to ICD-9-CM 036.81.