MS-DRG 147 – Ear, Nose, Mouth and Throat Malignancy with CC
A Medical DRG in MDC 03 (Diseases & Disorders of the Ear, Nose, Mouth & Throat). Inpatient cases group to DRG 147 when the ICD-10-CM principal diagnosis is one of the 102 codes listed below and a secondary diagnosis on the complication or comorbidity (CC) list is present. Its FY 2026 relative weight is 1.2715 with a geometric mean length of stay of 3.5 days.
Severity family
The grouper first assigns the case to MDC 03 from the principal diagnosis and finds no qualifying operating-room procedure (this is a Medical DRG; ICD-10-PCS codes do not drive assignment here), then applies the severity split from secondary diagnoses: with MCC → 146; with CC → 147; without CC/MCC → 148.
Principal Diagnosis Codes 102 codes · 25 categories
C00 Malignant neoplasm of lip9 codes
- C00.0 Malignant neoplasm of external upper lip
- C00.1 Malignant neoplasm of external lower lip
- C00.2 Malignant neoplasm of external lip, unspecified
- C00.3 Malignant neoplasm of upper lip, inner aspect
- C00.4 Malignant neoplasm of lower lip, inner aspect
- C00.5 Malignant neoplasm of lip, unspecified, inner aspect
- C00.6 Malignant neoplasm of commissure of lip, unspecified
- C00.8 Malignant neoplasm of overlapping sites of lip
- C00.9 Malignant neoplasm of lip, unspecified
C01 Malignant neoplasm of base of tongue1 code
- C01 Malignant neoplasm of base of tongue
C02 Malignant neoplasm of other and unspecified parts of tongue7 codes
- C02.0 Malignant neoplasm of dorsal surface of tongue
- C02.1 Malignant neoplasm of border of tongue
- C02.2 Malignant neoplasm of ventral surface of tongue
- C02.3 Malignant neoplasm of anterior two-thirds of tongue, part unspecified
- C02.4 Malignant neoplasm of lingual tonsil
- C02.8 Malignant neoplasm of overlapping sites of tongue
- C02.9 Malignant neoplasm of tongue, unspecified
C03 Malignant neoplasm of gum3 codes
C04 Malignant neoplasm of floor of mouth4 codes
C05 Malignant neoplasm of palate5 codes
C06 Malignant neoplasm of other and unspecified parts of mouth6 codes
- C06.0 Malignant neoplasm of cheek mucosa
- C06.1 Malignant neoplasm of vestibule of mouth
- C06.2 Malignant neoplasm of retromolar area
- C06.80 Malignant neoplasm of overlapping sites of unspecified parts of mouth
- C06.89 Malignant neoplasm of overlapping sites of other parts of mouth
- C06.9 Malignant neoplasm of mouth, unspecified
C07 Malignant neoplasm of parotid gland1 code
- C07 Malignant neoplasm of parotid gland
C08 Malignant neoplasm of other and unspecified major salivary glands3 codes
C09 Malignant neoplasm of tonsil4 codes
C10 Malignant neoplasm of oropharynx7 codes
- C10.0 Malignant neoplasm of vallecula
- C10.1 Malignant neoplasm of anterior surface of epiglottis
- C10.2 Malignant neoplasm of lateral wall of oropharynx
- C10.3 Malignant neoplasm of posterior wall of oropharynx
- C10.4 Malignant neoplasm of branchial cleft
- C10.8 Malignant neoplasm of overlapping sites of oropharynx
- C10.9 Malignant neoplasm of oropharynx, unspecified
C11 Malignant neoplasm of nasopharynx6 codes
- C11.0 Malignant neoplasm of superior wall of nasopharynx
- C11.1 Malignant neoplasm of posterior wall of nasopharynx
- C11.2 Malignant neoplasm of lateral wall of nasopharynx
- C11.3 Malignant neoplasm of anterior wall of nasopharynx
- C11.8 Malignant neoplasm of overlapping sites of nasopharynx
- C11.9 Malignant neoplasm of nasopharynx, unspecified
C12 Malignant neoplasm of pyriform sinus1 code
- C12 Malignant neoplasm of pyriform sinus
C13 Malignant neoplasm of hypopharynx5 codes
C14 Malignant neoplasm of other and ill-defined sites in the lip, oral cavity and pharynx3 codes
C30 Malignant neoplasm of nasal cavity and middle ear2 codes
C31 Malignant neoplasm of accessory sinuses6 codes
C32 Malignant neoplasm of larynx6 codes
C39 Malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organs1 code
- C39.0 Malignant neoplasm of upper respiratory tract, part unspecified
C46 Kaposi's sarcoma1 code
- C46.2 Kaposi's sarcoma of palate
C76 Malignant neoplasm of other and ill-defined sites1 code
- C76.0 Malignant neoplasm of head, face and neck
D00 Carcinoma in situ of oral cavity, esophagus and stomach9 codes
- D00.00 Carcinoma in situ of oral cavity, unspecified site
- D00.01 Carcinoma in situ of labial mucosa and vermilion border
- D00.02 Carcinoma in situ of buccal mucosa
- D00.03 Carcinoma in situ of gingiva and edentulous alveolar ridge
- D00.04 Carcinoma in situ of soft palate
- D00.05 Carcinoma in situ of hard palate
- D00.06 Carcinoma in situ of floor of mouth
- D00.07 Carcinoma in situ of tongue
- D00.08 Carcinoma in situ of pharynx
D02 Carcinoma in situ of middle ear and respiratory system1 code
- D02.0 Carcinoma in situ of larynx
D37 Neoplasm of uncertain behavior of oral cavity and digestive organs9 codes
- D37.01 Neoplasm of uncertain behavior of lip
- D37.02 Neoplasm of uncertain behavior of tongue
- D37.030 Neoplasm of uncertain behavior of the parotid salivary glands
- D37.031 Neoplasm of uncertain behavior of the sublingual salivary glands
- D37.032 Neoplasm of uncertain behavior of the submandibular salivary glands
- D37.039 Neoplasm of uncertain behavior of the major salivary glands, unspecified
- D37.04 Neoplasm of uncertain behavior of the minor salivary glands
- D37.05 Neoplasm of uncertain behavior of pharynx
- D37.09 Neoplasm of uncertain behavior of other specified sites of the oral cavity
D38 Neoplasm of uncertain behavior of middle ear and respiratory and intrathoracic organs1 code
- D38.0 Neoplasm of uncertain behavior of larynx
Procedure Codes
Frequently Asked Questions
What is MS-DRG 147?
MS-DRG 147 (Ear, Nose, Mouth and Throat Malignancy with CC) is a medical DRG in MDC 03 (Diseases & Disorders of the Ear, Nose, Mouth & Throat). Its FY 2026 relative weight is 1.2715 with a geometric mean length of stay of 3.5 days.
What is the difference between DRG 146, 147, 148?
All 3 share the same base category; the severity of secondary diagnoses separates them: 146 (with MCC), 147 (with CC), 148 (without CC/MCC). A major complication or comorbidity (MCC) places the case in the highest-weighted DRG of the family; a CC in the middle; neither in the lowest.
How many diagnosis codes group to DRG 147?
102 ICD-10-CM principal diagnosis codes group to this DRG, spanning 25 three-character categories.
What is the relative weight of DRG 147?
The FY 2026 relative weight of this DRG is 1.2715, meaning reimbursement of roughly 1.27 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.
