ICD-10 code for Noma

The ICD-10-CM code for Noma is A69.0 (Necrotizing ulcerative stomatitis). The official index lists 4 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on A69.0.

Within A69 (other spirochetal infections), A69.0 is specifically for necrotizing ulcerative stomatitis. Related codes cover other Vincent's infections (A69.1), Lyme disease (A69.2), other specified spirochetal infections (A69.8) and spirochetal infection, unspecified (A69.9).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC, relative weight 5.6154), DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC, relative weight 4.381), DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC, relative weight 2.7307), DRG 157 (Dental and Oral Diseases with MCC, relative weight 1.809), DRG 158 (Dental and Oral Diseases with CC, relative weight 0.9366) and DRG 159 (Dental and Oral Diseases without CC/MCC, relative weight 0.6893), in Pre-MDC and MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.