ICD-10-CM 2027
ICD-10 code for diphtheritic conjunctivitis nos
From the official ICD-10-CM alphabetic index entry “Conjunctivitis (staphylococcal) (streptococcal) NOS › diphtheritic”. Page updated September 29, 2026.
About coding diphtheritic conjunctivitis nos
The ICD-10-CM code for diphtheritic conjunctivitis nos is A36.86 (Diphtheritic conjunctivitis).
Within A36.8 (other diphtheria), A36.86 is specifically for diphtheritic conjunctivitis. Related codes cover diphtheritic cardiomyopathy (A36.81), diphtheritic radiculomyelitis (A36.82), diphtheritic polyneuritis (A36.83), diphtheritic tubulo-interstitial nephropathy (A36.84), diphtheritic cystitis (A36.85) and other diphtheritic complications (A36.89).
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 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent, relative weight 1.2471) and DRG 125 (Other Disorders of the Eye without MCC, relative weight 0.7702), in MDC 02 (Diseases and Disorders of the Eye), 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 diphtheritic conjunctivitis nos ICD-10 codes
What is the ICD-10 code for diphtheritic conjunctivitis nos?
- A36.86 — Diphtheritic conjunctivitis.
Is A36.86 billable?
- Yes. A36.86 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A36.86 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A36.86 as a principal diagnosis.
Is A36.86 a CC or MCC?
- A36.86 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.