ICD-10-CM 2027
ICD-10 code for palate narrowing
From the official ICD-10-CM alphabetic index entry “Narrowing › palate”. Page updated September 29, 2026.
About coding palate narrowing
The ICD-10-CM code for palate narrowing is M26.89 (Other dentofacial anomalies).
Within M26.8, choose M26.89 (Other dentofacial anomalies) only when documentation doesn't support a more specific option: anterior soft tissue impingement (M26.81) and posterior soft tissue impingement (M26.82).
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.
Common questions about palate narrowing ICD-10 codes
What is the ICD-10 code for palate narrowing?
- M26.89 — Other dentofacial anomalies.
Is M26.89 billable?
- Yes. M26.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M26.89 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M26.89 as a principal diagnosis.
Is M26.89 a CC or MCC?
- No. M26.89 is neither a CC nor an MCC under MS-DRG v44.0.