MS-DRG 159: DENTAL AND ORAL DISEASES WITHOUT CC/MCC
MS-DRG 159 is dental and oral diseases without cc/mcc, in MDC 03 (a medical DRG), at the without-CC/MCC level. Its FY2027 relative weight is 0.6893, so a case here pays less than the average Medicare inpatient stay (weight 1.0), with a geometric mean length of stay of 2.00 days. 415 ICD-10-CM principal diagnoses group into MS-DRGs 157–159 under the CMS definitions manual; the most-searched are listed below.
FY2027 payment factors
- Relative weight
- 0.6893
- Geometric mean LOS
- 2.00
- Arithmetic mean LOS
- 2.50
- Post-acute transfer
- No
Principal diagnoses that group to MS-DRGs 157–159
From the CMS MS-DRG definitions manual’s principal-diagnosis index: 415 ICD-10-CM codes route here, and the CC/MCC status of the secondary diagnoses decides which of 157–159 the case lands in. The 24 most-searched:
- K12.2Cellulitis and abscess of mouth
- K02.9Dental caries, unspecified
- K13.79Other lesions of oral mucosa
- K04.7Periapical abscess without sinus
- M27.2Inflammatory conditions of jaws
- B37.0Candidal stomatitis
- K08.89Other specified disorders of teeth and supporting structures
- K13.70Unspecified lesions of oral mucosa
- M26.609Unspecified temporomandibular joint disorder, unspecified side
- D16.5Benign neoplasm of lower jaw bone
- K01.1Impacted teeth
- K13.0Diseases of lips
- K14.8Other diseases of tongue
- M26.603Bilateral temporomandibular joint disorder, unspecified
- R68.84Jaw pain
- D10.0Benign neoplasm of lip
- D10.39Benign neoplasm of other parts of mouth
- K03.81Cracked tooth
- K04.6Periapical abscess with sinus
- K08.9Disorder of teeth and supporting structures, unspecified
- K09.0Developmental odontogenic cysts
- K12.0Recurrent oral aphthae
- K12.1Other forms of stomatitis
- K12.30Oral mucositis (ulcerative), unspecified
391 more codes group here. Open any code above for its full hierarchy, or check a whole claim in the free DRG calculator.
The severity splits
Same base DRG, split by whether a secondary diagnosis is a CC or MCC. The last column is the weight change from MS-DRG 159.
| 157 | DENTAL AND ORAL DISEASES WITH MCC | 1.8090 | +1.1197 |
| 158 | DENTAL AND ORAL DISEASES WITH CC | 0.9366 | +0.2473 |
| 159 | DENTAL AND ORAL DISEASES WITHOUT CC/MCC | 0.6893 |
All FY2027 MS-DRGs · MDC 03