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ICD-10-CM 2027

ICD-10 code for alveolar process cicatrix

M26.79

Other specified alveolar anomalies

✓ Billable / specific

From the official ICD-10-CM alphabetic index entry “Cicatrix (adherent) (contracted) (painful) (vicious) › alveolar process”. Page updated September 29, 2026.

About coding alveolar process cicatrix

The ICD-10-CM code for alveolar process cicatrix is M26.79 (Other specified alveolar anomalies).

Within M26.7, choose M26.79 (Other specified alveolar anomalies) only when documentation doesn't support a more specific option: unspecified alveolar anomaly (M26.70), alveolar maxillary hyperplasia (M26.71), alveolar mandibular hyperplasia (M26.72), alveolar maxillary hypoplasia (M26.73) and alveolar mandibular hypoplasia (M26.74).

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 alveolar process cicatrix ICD-10 codes

What is the ICD-10 code for alveolar process cicatrix?

M26.79 — Other specified alveolar anomalies.

Is M26.79 billable?

Yes. M26.79 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can M26.79 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict M26.79 as a principal diagnosis.

Is M26.79 a CC or MCC?

No. M26.79 is neither a CC nor an MCC under MS-DRG v44.0.