ICD-10-CM 2027
ICD-10 code for congenital chancre
From the official ICD-10-CM alphabetic index entry “Chancre (any genital site) (hard) (hunterian) (mixed) (primary) (seronegative) (seropositive) (syphilitic) › congenital”. Page updated September 29, 2026.
About coding congenital chancre
The ICD-10-CM code for congenital chancre is A50.07 (Early mucocutaneous congenital syphilis).
Within A50.0 (early congenital syphilis, symptomatic), A50.07 is specifically for early mucocutaneous congenital syphilis. Related codes cover early congenital syphilitic oculopathy (A50.01), early congenital syphilitic osteochondropathy (A50.02), early congenital syphilitic pharyngitis (A50.03), early congenital syphilitic pneumonia (A50.04), early congenital syphilitic rhinitis (A50.05), early cutaneous congenital syphilis (A50.06), early visceral congenital syphilis (A50.08) and other early congenital syphilis, symptomatic (A50.09).
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 867 (Other Infectious and Parasitic Diseases Diagnoses with MCC, relative weight 2.1859), DRG 868 (Other Infectious and Parasitic Diseases Diagnoses with CC, relative weight 1.0235) and DRG 869 (Other Infectious and Parasitic Diseases Diagnoses without CC/MCC, relative weight 0.6787), in MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), 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 congenital chancre ICD-10 codes
What is the ICD-10 code for congenital chancre?
- A50.07 — Early mucocutaneous congenital syphilis.
Is A50.07 billable?
- Yes. A50.07 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A50.07 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A50.07 as a principal diagnosis.
Is A50.07 a CC or MCC?
- A50.07 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.