Browse Medicare

Hospital inpatient stays (Part A), procedure codes (Part B) and medications (Part D), from CMS's public Medicare data.

Medicare · Part A · CMS MS-DRG classification

Browse hospital inpatient

Hospital inpatient stays, classified the way CMS's MS-DRG system groups them — Major Diagnostic Category, then DRG. Open any DRG for its national market.

767 DRGs across 24 Major Diagnostic Categories · FY2024 (Oct–Sep) Medicare fee-for-service Part A

05 · Diseases and disorders of the circulatory system 1,415,523 discharges · 98 DRGs › 18 · Infectious and parasitic diseases, systemic or unspecified sites 865,018 discharges · 17 DRGs › 04 · Diseases and disorders of the respiratory system 810,178 discharges · 41 DRGs › 08 · Diseases and disorders of the musculoskeletal system and connective tissue 757,955 discharges · 111 DRGs › 06 · Diseases and disorders of the digestive system 659,452 discharges · 58 DRGs › 01 · Diseases and disorders of the nervous system 606,944 discharges · 75 DRGs › 11 · Diseases and disorders of the kidney and urinary tract 580,245 discharges · 42 DRGs › 10 · Endocrine, nutritional and metabolic diseases and disorders 282,408 discharges · 26 DRGs › All 24 Major Diagnostic Categories, ranked by discharges FY2024 ›

Major Diagnostic Category (MDC) is CMS's own top-level grouping of hospital inpatient MS-DRGs — a classification of where the care happened and what kind, not of the Part B codes below. Each category opens its DRGs; each DRG opens its national market. Discharges are counted stays reported to Medicare fee-for-service Part A (no Medicare Advantage), Maryland waiver-priced.

Medicare · Part B · CMS RBCS classification

Browse Medicare procedure codes

Every CPT®/HCPCS code billed by physician groups to Medicare Part B, organized the way CMS classifies them — category, subcategory, family. Open any code for its national market.

6,259 codes · CY2013–CY2024 Medicare fee-for-service Part B

P Procedures 2,985 codes · 9 subcategories T Tests 1,111 codes · 7 subcategories R Treatments 775 codes · 7 subcategories I Imaging 675 codes · 6 subcategories E Evaluation & management 318 codes · 12 subcategories A Anesthesia 186 codes · 1 subcategory D Durable medical equipment 169 codes · 4 subcategories O Other services 40 codes · 1 subcategory

Counts are codes billed by physician groups in our 12-year window of Medicare Part B claims — the codes a search can answer with ranked groups. Classification: CMS Restructured BETOS Classification System (RBCS). Nevvi is not affiliated with, or endorsed by, CMS or HHS.

Medicare · Part B · billing specialties

Browse by specialty

The categories above classify what each code is. Specialties cut the same Part B billing by who bills it — physician groups by the primary specialty they report to CMS, ranked by Medicare payments.

84 specialties · CY2024 Medicare fee-for-service Part B

Internal Medicine $7.2B Medicare payments › Family Practice $6.0B Medicare payments › Ophthalmology $5.3B Medicare payments › Diagnostic Radiology $4.8B Medicare payments › Physical Therapist in Private Practice $2.9B Medicare payments › Hematology/Oncology $2.6B Medicare payments › Dermatology $2.6B Medicare payments › Cardiovascular Disease (Cardiology) $2.2B Medicare payments › All 84 specialties, ranked by Medicare payments CY2024 ›

Specialty is the billing group's primary specialty as reported to CMS — a classification of who bills, not of the codes above. Each specialty opens its state-by-state breakdown and highest-billed codes.

Medicare · Part B · newly-introduced procedures

Browse what's new

The categories above classify what each code is; specialties, who bills it. This axis is when it arrived — procedures Medicare started paying for recently. Listed below: the newest arrivals that are already spreading.

93 emerging procedures · CY2024 Medicare fee-for-service Part B

Every procedure here is CPT-coded — shown with a trial or subscription, under AMA licensing.

All 93 emerging procedures, grouped by clinical family CY2024 ›

The rows above are the procedures that arrived in CY2023 and at least doubled their physician count in CY2024 — the newest procedures already spreading. Open the index for all 93, including earlier arrivals and slower movers. Newly-introduced procedures only — CPT Category III codes plus individually reviewed new Category I codes; a new code number that renames an established procedure is excluded. Biller counts are physicians with published Part B billing. The list is open; the physicians who billed each procedure earliest are part of the platform.

Medicare · Part D · medications

Medicare Part D medications

CY2024

Largest by claims, CY2024 › Largest by Part D drug cost, CY2024 › Every Part D medication, A–Z ›

Medicare · Part A, Part B and Part D · by billing-state market

Browse by state markets

This axis cuts Medicare by place: each state's own billing. The states with the most Part B services billed are listed here, in alphabetical order. Open a state for its physician billing, its hospital inpatient stays, and its Part D medications.

51 state markets · CY2024 Medicare fee-for-service Part B

California 132.9M services billed › Florida 161.3M services billed › Illinois 62.6M services billed › Maryland 50.6M services billed › New Jersey 53.3M services billed › New York 95.1M services billed › Pennsylvania 49.8M services billed › Texas 111.8M services billed › All 51 state markets, A to Z CY2024 ›

A state market is Medicare billing attributed to the state where the service was billed — a classification of where the care was billed, not of the codes above. Each state opens its physician billing by specialty, its hospital inpatient stays by DRG, and its Part D medications by claims. The states listed are those with the most Medicare fee-for-service Part B services, shown in alphabetical order; the hospital and Part D figures carry their own vintages on the page.