Department of Health and Human Services (HHS)
7,616,327Words in 617 parts
9.1Restriction density (per 1,000 words)
18.1Reading grade
50.8%Unchanged since 2017
44Flagged parts
2026-11-03Last change
Section changes per year
From the eCFR versioner, for the parts that the agency owns now. Before 2017 is the baseline load.
Text and size
- Sentences
- 30.8 words on average; 25.2% over 40 words; 27.2% passive; 14.9 cross-references per 1,000 words
- Sentence types
- definition 4.5% · prohibition 2.1% · paperwork 5.6% · obligation 15.9% · permission 8.7% · other 63.2%
- Checksum
2152ce2627870fe62b5dbed53c05873dbd76e501335ac1b577dea4334d66f4b7changed since last refresh
Review candidates in this agency
| Rank | Part | Words | Score |
|---|---|---|---|
| 23 | 21 CFR 111
CURRENT GOOD MANUFACTURING PRACTICE IN MANUFACTURING, PACKAGING, LABELING, OR HOLDING OPERATIONS FOR DIETARY SUPPLEMENTS
High signals: Directive share
+2.4 SD · Paperwork share
+2.2 SD · Restriction density
+1.6 SD · Reading grade
+1.5 SD |
15,693 | 1.59 |
| 30 | 21 CFR 1003
NOTIFICATION OF DEFECTS OR FAILURE TO COMPLY
High signals: Paperwork share
+3.4 SD · Directive share
+2.5 SD · Restriction density
+1.7 SD · Reading grade
+1.5 SD |
2,076 | 1.52 |
| 31 | 21 CFR 106
INFANT FORMULA REQUIREMENTS PERTAINING TO CURRENT GOOD MANUFACTURING PRACTICE, QUALITY CONTROL PROCEDURES, QUALITY FACTORS, RECORDS AND REPORTS, AND NOTIFICATIONS
High signals: Directive share
+2.5 SD · Paperwork share
+1.9 SD · Reading grade
+1.6 SD · Restriction density
+1.4 SD |
17,241 | 1.51 |
| 47 | 45 CFR 98
CHILD CARE AND DEVELOPMENT FUND
High signals: Reading grade
+3.2 SD · Directive share
+1.7 SD · Size
+1.6 SD · Paperwork share
+1.4 SD |
38,351 | 1.36 |
| 56 | 21 CFR 211
CURRENT GOOD MANUFACTURING PRACTICE FOR FINISHED PHARMACEUTICALS
High signals: Directive share
+2.8 SD · Restriction density
+2.8 SD |
12,013 | 1.31 |
| 64 | 21 CFR 99
DISSEMINATION OF INFORMATION ON UNAPPROVED/NEW USES FOR MARKETED DRUGS, BIOLOGICS, AND DEVICES
High signals: Paperwork share
+3.0 SD · Reading grade
+2.4 SD · Directive share
+1.2 SD |
7,256 | 1.28 |
| 113 | 21 CFR 21
PROTECTION OF PRIVACY
High signals: Paperwork share
+3.1 SD |
10,681 | 1.11 |
| 115 | 21 CFR 507
CURRENT GOOD MANUFACTURING PRACTICE, HAZARD ANALYSIS, AND RISK-BASED PREVENTIVE CONTROLS FOR FOOD FOR ANIMALS
High signals: Reading grade
+2.5 SD · Directive share
+1.3 SD · Size
+1.1 SD |
20,674 | 1.11 |
| 128 | 45 CFR 411
STANDARDS TO PREVENT, DETECT, AND RESPOND TO SEXUAL ABUSE AND SEXUAL HARASSMENT INVOLVING UNACCOMPANIED CHILDREN
High signals: Directive share
+2.0 SD · Restriction density
+1.6 SD |
11,826 | 1.08 |
| 145 | 21 CFR 225
CURRENT GOOD MANUFACTURING PRACTICE FOR MEDICATED FEEDS
High signals: Restriction density
+2.7 SD · Directive share
+1.8 SD · Paperwork share
+1.6 SD |
4,046 | 1.06 |
| 159 | 21 CFR 803
MEDICAL DEVICE REPORTING
High signals: Paperwork share
+3.7 SD |
10,544 | 1.05 |
| 164 | 45 CFR 94
RESPONSIBLE PROSPECTIVE CONTRACTORS
High signals: Reading grade
+2.5 SD · Paperwork share
+2.3 SD |
5,433 | 1.04 |
| 183 | 45 CFR 7
EMPLOYEE INVENTIONS
High signals: Reading grade
+3.8 SD · Directive share
+1.9 SD |
1,228 | 1.03 |
| 188 | 42 CFR 53
GRANTS, LOANS AND LOAN GUARANTEES FOR CONSTRUCTION AND MODERNIZATION OF HOSPITALS AND MEDICAL FACILITIES
High signals: Reading grade
+1.7 SD · Paperwork share
+1.7 SD · Directive share
+1.5 SD |
5,180 | 1.02 |
| 214 | 21 CFR 610
GENERAL BIOLOGICAL PRODUCTS STANDARDS
High signals: Directive share
+1.9 SD · Restriction density
+1.1 SD |
10,665 | 0.97 |
| 240 | 42 CFR 34
MEDICAL EXAMINATION OF ALIENS
High signals: Paperwork share
+1.7 SD · Restriction density
+1.3 SD · Directive share
+1.2 SD |
5,456 | 0.94 |
| 257 | 21 CFR 108
EMERGENCY PERMIT CONTROL
High signals: Paperwork share
+1.4 SD · Directive share
+1.4 SD |
6,299 | 0.92 |
| 264 | 45 CFR 303
STANDARDS FOR PROGRAM OPERATIONS
High signals: Reading grade
+1.6 SD · Directive share
+1.5 SD · Paperwork share
+1.2 SD · Size
+1.1 SD |
21,581 | 0.92 |
| 317 | 21 CFR 900
MAMMOGRAPHY
High signals: Restriction density
+1.6 SD · Directive share
+1.4 SD · Size
+1.2 SD |
23,624 | 0.87 |
| 321 | 21 CFR 640
ADDITIONAL STANDARDS FOR HUMAN BLOOD AND BLOOD PRODUCTS
High signals: Restriction density
+2.5 SD · Directive share
+2.1 SD |
14,281 | 0.87 |
| 333 | 48 CFR 324
PROTECTION OF PRIVACY AND FREEDOM OF INFORMATION
High signals: Paperwork share
+2.7 SD · Directive share
+1.7 SD · Restriction density
+1.2 SD |
1,067 | 0.86 |
| 352 | 21 CFR 502
COMMON OR USUAL NAMES FOR NONSTANDARDIZED ANIMAL FOODS
High signals: Directive share
+2.5 SD · Restriction density
+1.7 SD |
1,006 | 0.84 |
| 353 | 45 CFR 1328
THE NATIONAL NETWORK OF UNIVERSITY CENTERS FOR EXCELLENCE IN DEVELOPMENTAL DISABILITIES, EDUCATION, RESEARCH, AND SERVICE
High signals: Directive share
+2.5 SD · Restriction density
+1.6 SD · Paperwork share
+1.3 SD |
2,529 | 0.84 |
| 407 | 21 CFR 113
THERMALLY PROCESSED LOW-ACID FOODS PACKAGED IN HERMETICALLY SEALED CONTAINERS
High signals: Restriction density
+2.6 SD · Directive share
+1.2 SD |
18,371 | 0.81 |
| 448 | 21 CFR 213
CURRENT GOOD MANUFACTURING PRACTICE FOR MEDICAL GASES
High signals: Restriction density
+2.8 SD · Directive share
+2.2 SD · Paperwork share
+1.2 SD |
6,989 | 0.79 |
Score: the mean of six signals, in standard deviations (SD). Across the CFR, the top 641 of 6,402 ranked parts (10%) get a flag for review; this list shows 25. A flag is not a finding.
Statutes behind the most text
- 42 U.S.C. 1302: 2,757,354 words in 71 parts (36.2% of this agency's text)
- 21 U.S.C. 321: 1,639,208 words in 145 parts (21.5% of this agency's text)
- 42 U.S.C. 216: 663,777 words in 62 parts (8.7% of this agency's text)
- 21 U.S.C. 351: 523,210 words in 30 parts (6.9% of this agency's text)
- 42 U.S.C. 300gg: 255,210 words in 9 parts (3.4% of this agency's text)
- 42 U.S.C. 263a: 215,976 words in 3 parts (2.8% of this agency's text)
- 42 U.S.C. 243: 194,288 words in 6 parts (2.6% of this agency's text)
- 5 U.S.C. 301: 173,401 words in 56 parts (2.3% of this agency's text)
- 42 U.S.C. 18021: 160,131 words in 2 parts (2.1% of this agency's text)
- 31 U.S.C. 3711: 155,779 words in 2 parts (2.0% of this agency's text)
From the authority notes. A citation is not proof that the statute requires the rule.
Largest parts
- 42 CFR 423: VOLUNTARY MEDICARE PRESCRIPTION DRUG BENEFIT (200,870 words)
- 42 CFR 422: MEDICARE ADVANTAGE PROGRAM (185,855 words)
- 42 CFR 414: PAYMENT FOR PART B MEDICAL AND OTHER HEALTH SERVICES (161,033 words)
- 42 CFR 412: PROSPECTIVE PAYMENT SYSTEMS FOR INPATIENT HOSPITAL SERVICES (157,532 words)
- 42 CFR 413: PRINCIPLES OF REASONABLE COST REIMBURSEMENT; PAYMENT FOR END-STAGE RENAL DISEASE SERVICES; PROSPECTIVELY DETERMINED PAYMENT RATES FOR SKILLED NURSING FACILITIES; PAYMENT FOR ACUTE KIDNEY INJURY DIALYSIS (146,414 words)
- 42 CFR 405: FEDERAL HEALTH INSURANCE FOR THE AGED AND DISABLED (143,867 words)
- 21 CFR 101: FOOD LABELING (116,658 words)
- 42 CFR 512: STANDARD PROVISIONS FOR MANDATORY INNOVATION CENTER MODELS AND SPECIFIC PROVISIONS FOR CERTAIN MODELS (108,795 words)
- 21 CFR 866: IMMUNOLOGY AND MICROBIOLOGY DEVICES (103,134 words)
- 45 CFR 155: EXCHANGE ESTABLISHMENT STANDARDS AND OTHER RELATED STANDARDS UNDER THE AFFORDABLE CARE ACT (102,808 words)
Sub-agencies
- Administration for Children and Families
- Centers for Medicare & Medicaid Services
- Food and Drug Administration
- Indian Health Service
- Office of Administration for Children and Families Child Support Enforcement (Child Support Enforcement Program)
- Office of Administration for Children and Families Community Services
- Office of Administration for Children and Families Family Assistance (Assistance Programs)
- Office of Administration for Children and Families Refugee Resettlement
- Office of Inspector General-Health Care
- Public Health Service
Reading grade and sentence types are approximate. Simple rules label each sentence; the first match wins.