MS-DRG 179 — RESPIRATORY INFECTIONS AND INFLAMMATIONS WITHOUT CC/MCC
FY2026 payment factors
- Relative weight
- 0.7550
- Geometric mean LOS
- 2.40
- Arithmetic mean LOS
- 3.00
- Post-acute transfer
- Yes
This DRG is subject to the post-acute care transfer policy: a discharge to a qualifying setting below the mean length of stay is paid per diem rather than in full.
Other DRGs in MDC 04
The with-MCC, with-CC and without-CC/MCC splits usually sit next to each other here. Those are what a documentation query is actually deciding between, and the weight gap between them is why the query is worth raising.
- 163MAJOR CHEST PROCEDURES WITH MCC4.4818
- 164MAJOR CHEST PROCEDURES WITH CC2.5240
- 165MAJOR CHEST PROCEDURES WITHOUT CC/MCC1.9142
- 166OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITH MCC3.7377
- 167OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITH CC1.8034
- 168OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITHOUT CC/MCC1.3664
- 173ULTRASOUND ACCELERATED AND OTHER THROMBOLYSIS WITH PRINCIPAL DIAGNOSIS PULMONARY EMBOLISM2.9764
- 175PULMONARY EMBOLISM WITH MCC OR ACUTE COR PULMONALE1.3736
- 176PULMONARY EMBOLISM WITHOUT MCC0.8050
- 177RESPIRATORY INFECTIONS AND INFLAMMATIONS WITH MCC1.5627
- 178RESPIRATORY INFECTIONS AND INFLAMMATIONS WITH CC0.9760
- 180RESPIRATORY NEOPLASMS WITH MCC1.7660
- 181RESPIRATORY NEOPLASMS WITH CC1.0710
- 182RESPIRATORY NEOPLASMS WITHOUT CC/MCC0.7538
- 183MAJOR CHEST TRAUMA WITH MCC1.5299
- 184MAJOR CHEST TRAUMA WITH CC1.0641
- 185MAJOR CHEST TRAUMA WITHOUT CC/MCC0.7865
- 186PLEURAL EFFUSION WITH MCC1.5585
- 187PLEURAL EFFUSION WITH CC0.9891
- 188PLEURAL EFFUSION WITHOUT CC/MCC0.7172
- 189PULMONARY EDEMA AND RESPIRATORY FAILURE1.2354
- 190CHRONIC OBSTRUCTIVE PULMONARY DISEASE WITH MCC1.1077
- 191CHRONIC OBSTRUCTIVE PULMONARY DISEASE WITH CC0.8430
- 192CHRONIC OBSTRUCTIVE PULMONARY DISEASE WITHOUT CC/MCC0.6420
- 193SIMPLE PNEUMONIA AND PLEURISY WITH MCC1.3144
- 194SIMPLE PNEUMONIA AND PLEURISY WITH CC0.8059
- 195SIMPLE PNEUMONIA AND PLEURISY WITHOUT CC/MCC0.6285
- 196INTERSTITIAL LUNG DISEASE WITH MCC1.8872
- 197INTERSTITIAL LUNG DISEASE WITH CC0.9491
- 198INTERSTITIAL LUNG DISEASE WITHOUT CC/MCC0.7162
- 199PNEUMOTHORAX WITH MCC1.7641
- 200PNEUMOTHORAX WITH CC1.0993
- 201PNEUMOTHORAX WITHOUT CC/MCC0.7151
- 202BRONCHITIS AND ASTHMA WITH CC/MCC0.9712
- 203BRONCHITIS AND ASTHMA WITHOUT CC/MCC0.6700
- 204RESPIRATORY SIGNS AND SYMPTOMS0.8074
- 205OTHER RESPIRATORY SYSTEM DIAGNOSES WITH MCC1.8310
- 206OTHER RESPIRATORY SYSTEM DIAGNOSES WITHOUT MCC0.9411
- 207RESPIRATORY SYSTEM DIAGNOSIS WITH VENTILATOR SUPPORT >96 HOURS6.4347
- 208RESPIRATORY SYSTEM DIAGNOSIS WITH VENTILATOR SUPPORT <=96 HOURS2.7487
Working the claim behind this DRG
A DRG is assigned from the diagnoses and procedures already on the claim, so the questions that decide MS-DRG 179 are coding questions. Look the principal diagnosis up in the full ICD-10-CM tabular list with its Excludes1 and “code first” notes attached, or start from the condition instead of the code in the codes-by-condition index. For the secondary diagnoses that move a case between the with-MCC, with-CC and without-CC/MCC splits, paste the whole set into the free claim scrubber and see which pairs collide before the claim goes out — no account, no card.
The supplies, drugs and devices billed alongside an inpatient stay are HCPCS Level II, listed in full at HCPCS by section. If the claim comes back rejected, the denial code index explains what each CARC actually means and what to do about it, and the decision guides walk the sequencing calls that most often cause one — sepsis and diabetes above all.
Every one of those is free and needs no account. This page is the payment table: it says what MS-DRG 179 is worth. Which medical DRG a set of diagnoses lands in is the workspace’s DRG impact check, from the CMS CC/MCC lists; it does not group surgical cases.