DRG 198
Medical DRGInterstitial Lung Disease without CC/MCC
What is MS-DRG 198?
MS-DRG 198 is a Medical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 04 (MDC 04) without a significant Complication or Comorbidity. It maps to 100 ICD-10-CM diagnosis codes. For FY 2026 it carries a relative weight of 0.7162 with a geometric mean length of stay of 2.2 days and an arithmetic mean of 2.7 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.
FY 2026 Payment Data
Official values from Table 5 of the FY 2026 IPPS Final Rule (CMS).
Related MS-DRGs in This Severity Group
The same clinical condition is split into separate DRGs by complication severity. MCC pays more than CC, which pays more than no CC/MCC.
Linked ICD-10-CM Diagnosis Mappings
- B44.81
Allergic bronchopulmonary aspergillosis
BillableChapter 1 - B90.9
Sequelae of respiratory and unspecified tuberculosis
BillableChapter 1 - D86.0
Sarcoidosis of lung
BillableChapter 3 - D86.1
Sarcoidosis of lymph nodes
BillableChapter 3 - D86.2
Sarcoidosis of lung with sarcoidosis of lymph nodes
BillableChapter 3 - D86.3
Sarcoidosis of skin
BillableChapter 3 - D86.81
Sarcoid meningitis
BillableChapter 3 - D86.82
Multiple cranial nerve palsies in sarcoidosis
BillableChapter 3 - D86.83
Sarcoid iridocyclitis
BillableChapter 3 - D86.84
Sarcoid pyelonephritis
BillableChapter 3 - D86.85
Sarcoid myocarditis
BillableChapter 3 - D86.86
Sarcoid arthropathy
BillableChapter 3 - D86.87
Sarcoid myositis
BillableChapter 3 - D86.89
Sarcoidosis of other sites
BillableChapter 3 - D86.9
Sarcoidosis, unspecified
BillableChapter 3 - J60
Coalworker's pneumoconiosis
BillableChapter 10 - J61
Pneumoconiosis due to asbestos and other mineral fibers
BillableChapter 10 - J62.0
Pneumoconiosis due to talc dust
BillableChapter 10 - J62.8
Pneumoconiosis due to other dust containing silica
BillableChapter 10 - J63.0
Aluminosis (of lung)
BillableChapter 10 - J63.1
Bauxite fibrosis (of lung)
BillableChapter 10 - J63.2
Berylliosis
BillableChapter 10 - J63.3
Graphite fibrosis (of lung)
BillableChapter 10 - J63.4
Siderosis
BillableChapter 10 - J63.5
Stannosis
BillableChapter 10 - J63.6
Pneumoconiosis due to other specified inorganic dusts
BillableChapter 10 - J64
Unspecified pneumoconiosis
BillableChapter 10 - J65
Pneumoconiosis associated with tuberculosis
BillableChapter 10 - J66.0
Byssinosis
BillableChapter 10 - J66.1
Flax-dressers' disease
BillableChapter 10 - J66.2
Cannabinosis
BillableChapter 10 - J66.8
Airway disease due to other specific organic dusts
BillableChapter 10 - J67.0
Farmer's lung
BillableChapter 10 - J67.1
Bagassosis
BillableChapter 10 - J67.2
Bird fancier's lung
BillableChapter 10 - J67.3
Suberosis
BillableChapter 10 - J67.4
Maltworker's lung
BillableChapter 10 - J67.5
Mushroom-worker's lung
BillableChapter 10 - J67.6
Maple-bark-stripper's lung
BillableChapter 10 - J67.7
Air conditioner and humidifier lung
BillableChapter 10 - J67.8
Hypersensitivity pneumonitis due to other organic dusts
BillableChapter 10 - J67.9
Hypersensitivity pneumonitis due to unspecified organic dust
BillableChapter 10 - J70.1
Chronic and other pulmonary manifestations due to radiation
BillableChapter 10 - J82.81
Chronic eosinophilic pneumonia
BillableChapter 10 - J82.82
Acute eosinophilic pneumonia
BillableChapter 10 - J82.83
Eosinophilic asthma
BillableChapter 10 - J82.89
Other pulmonary eosinophilia, not elsewhere classified
BillableChapter 10 - J84.01
Alveolar proteinosis
BillableChapter 10 - J84.02
Pulmonary alveolar microlithiasis
BillableChapter 10 - J84.03
Idiopathic pulmonary hemosiderosis
BillableChapter 10 - J84.09
Other alveolar and parieto-alveolar conditions
BillableChapter 10 - J84.10
Pulmonary fibrosis, unspecified
BillableChapter 10 - J84.111
Idiopathic interstitial pneumonia, not otherwise specified
BillableChapter 10 - J84.112
Idiopathic pulmonary fibrosis
BillableChapter 10 - J84.113
Idiopathic non-specific interstitial pneumonitis
BillableChapter 10 - J84.114
Acute interstitial pneumonitis
BillableChapter 10 - J84.115
Respiratory bronchiolitis interstitial lung disease
BillableChapter 10 - J84.116
Cryptogenic organizing pneumonia
BillableChapter 10 - J84.117
Desquamative interstitial pneumonia
BillableChapter 10 - J84.170
Interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhere
BillableChapter 10 - J84.178
Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere
BillableChapter 10 - J84.2
Lymphoid interstitial pneumonia
BillableChapter 10 - J84.81
Lymphangioleiomyomatosis
BillableChapter 10 - J84.82
Adult pulmonary Langerhans cell histiocytosis
BillableChapter 10 - J84.83
Surfactant mutations of the lung
BillableChapter 10 - J84.841
Neuroendocrine cell hyperplasia of infancy
BillableChapter 10 - J84.842
Pulmonary interstitial glycogenosis
BillableChapter 10 - J84.843
Alveolar capillary dysplasia with vein misalignment
BillableChapter 10 - J84.848
Other interstitial lung diseases of childhood
BillableChapter 10 - J84.89
Other specified interstitial pulmonary diseases
BillableChapter 10 - J84.9
Interstitial pulmonary disease, unspecified
BillableChapter 10 - J99
Respiratory disorders in diseases classified elsewhere
BillableChapter 10 - M05.10
Rheumatoid lung disease with rheumatoid arthritis of unspecified site
BillableChapter 13 - M05.111
Rheumatoid lung disease with rheumatoid arthritis of right shoulder
BillableChapter 13 - M05.112
Rheumatoid lung disease with rheumatoid arthritis of left shoulder
BillableChapter 13 - M05.119
Rheumatoid lung disease with rheumatoid arthritis of unspecified shoulder
BillableChapter 13 - M05.121
Rheumatoid lung disease with rheumatoid arthritis of right elbow
BillableChapter 13 - M05.122
Rheumatoid lung disease with rheumatoid arthritis of left elbow
BillableChapter 13 - M05.129
Rheumatoid lung disease with rheumatoid arthritis of unspecified elbow
BillableChapter 13 - M05.131
Rheumatoid lung disease with rheumatoid arthritis of right wrist
BillableChapter 13 - M05.132
Rheumatoid lung disease with rheumatoid arthritis of left wrist
BillableChapter 13 - M05.139
Rheumatoid lung disease with rheumatoid arthritis of unspecified wrist
BillableChapter 13 - M05.141
Rheumatoid lung disease with rheumatoid arthritis of right hand
BillableChapter 13 - M05.142
Rheumatoid lung disease with rheumatoid arthritis of left hand
BillableChapter 13 - M05.149
Rheumatoid lung disease with rheumatoid arthritis of unspecified hand
BillableChapter 13 - M05.151
Rheumatoid lung disease with rheumatoid arthritis of right hip
BillableChapter 13 - M05.152
Rheumatoid lung disease with rheumatoid arthritis of left hip
BillableChapter 13 - M05.159
Rheumatoid lung disease with rheumatoid arthritis of unspecified hip
BillableChapter 13 - M05.161
Rheumatoid lung disease with rheumatoid arthritis of right knee
BillableChapter 13 - M05.162
Rheumatoid lung disease with rheumatoid arthritis of left knee
BillableChapter 13 - M05.169
Rheumatoid lung disease with rheumatoid arthritis of unspecified knee
BillableChapter 13 - M05.171
Rheumatoid lung disease with rheumatoid arthritis of right ankle and foot
BillableChapter 13 - M05.172
Rheumatoid lung disease with rheumatoid arthritis of left ankle and foot
BillableChapter 13 - M05.179
Rheumatoid lung disease with rheumatoid arthritis of unspecified ankle and foot
BillableChapter 13 - M05.19
Rheumatoid lung disease with rheumatoid arthritis of multiple sites
BillableChapter 13 - M34.81
Systemic sclerosis with lung involvement
BillableChapter 13 - P27.0
Wilson-Mikity syndrome
BillableChapter 16 - P27.1
Bronchopulmonary dysplasia originating in the perinatal period
BillableChapter 16 - P27.8
Other chronic respiratory diseases originating in the perinatal period
BillableChapter 16 - P27.9
Unspecified chronic respiratory disease originating in the perinatal period
BillableChapter 16