D00.08Carcinoma in situ of pharynx

D00.08 is the ICD-10-CM diagnosis code for carcinoma in situ of pharynx. It belongs to category D00 (carcinoma in situ of oral cavity, esophagus and stomach), block D00-D09 (in situ neoplasms) and chapter 2 (neoplasms). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within D00.0 (carcinoma in situ of lip, oral cavity and pharynx), D00.08 is specifically for carcinoma in situ of pharynx. Related codes cover oral cavity, unspecified site (D00.00), labial mucosa and vermilion border (D00.01), buccal mucosa (D00.02), gingiva and edentulous alveolar ridge (D00.03), soft palate (D00.04), hard palate (D00.05), floor of mouth (D00.06) and tongue (D00.07).

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 146 (Ear, Nose, Mouth and Throat Malignancy with MCC, relative weight 2.1329), DRG 147 (Ear, Nose, Mouth and Throat Malignancy with CC, relative weight 1.3055) and DRG 148 (Ear, Nose, Mouth and Throat Malignancy without CC/MCC, relative weight 0.8008), 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.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 230.0 (carcinoma in situ of lip, oral cavity, and pharynx).