ICD-10-CM 2027
ICD-10 code for meningococcal arthritis
From the official ICD-10-CM alphabetic index entry “Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) › meningococcal”. Page updated September 29, 2026.
About coding meningococcal arthritis
The ICD-10-CM code for meningococcal arthritis is A39.83 (Meningococcal arthritis).
Within A39.8 (other meningococcal infections), A39.83 is specifically for meningococcal arthritis. Related codes cover meningococcal encephalitis (A39.81), meningococcal retrobulbar neuritis (A39.82), 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 548 (Septic Arthritis with MCC, relative weight 1.9519), DRG 549 (Septic Arthritis with CC, relative weight 1.1435), DRG 550 (Septic Arthritis without CC/MCC, relative weight 0.8591), 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 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue) 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.
Common questions about meningococcal arthritis ICD-10 codes
What is the ICD-10 code for meningococcal arthritis?
- A39.83 — Meningococcal arthritis.
Is A39.83 billable?
- Yes. A39.83 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A39.83 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A39.83 as a principal diagnosis.
Is A39.83 a CC or MCC?
- A39.83 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.