SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 --------------------- SCHEDULE 13G INFORMATION STATEMENT PURSUANT TO RULES 13D-1 AND 13D-2 (AMENDMENT NO. 9) LABORATORY CORPORATION OF AMERICA HOLDINGS ------------------------------------------ (Name of Issuer) Common Stock, par value $0.01 per share --------------------------------------- (Title of Class of Securities) 50540R 10 2 -------------- (CUSIP Number) (CONTINUED ON FOLLOWING PAGE(S)) Page 1 of 7

13G CUSIP NO. 50540R 10 2 Page 2 of 7 - ------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS NATIONAL HEALTH CARE GROUP, INC. - ------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF MEMBER OF A GROUP (a) [ ] (b) [ ] - ------------------------------------------------------------------------------- 3. SEC USE ONLY - ------------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OR ORGANIZATION DELAWARE - ------------------------------------------------------------------------------- 5. SOLE VOTING POWER -0- ----------------------------------------------------------- NUMBER 6. SHARED VOTING POWER OF SHARES BENEFICIALLY 7,105,644 OWNED BY ----------------------------------------------------------- EACH 7. SOLE DISPOSITIVE POWER REPORTING PERSON WITH -0- ----------------------------------------------------------- 8. SHARED DISPOSITIVE POWER 7,105,644 - ------------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,105,644 - ------------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ] - ------------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.7% - ------------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON CO

13G CUSIP NO. 50540R 10 2 Page 3 of 7 - ------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS MAFCO HOLDINGS INC. - ------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF MEMBER OF A GROUP (a) [ ] (b) [ ] - ------------------------------------------------------------------------------- 3. SEC USE ONLY - ------------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OR ORGANIZATION DELAWARE - ------------------------------------------------------------------------------- 5. SOLE VOTING POWER -0- ----------------------------------------------------------- NUMBER 6. SHARED VOTING POWER OF SHARES BENEFICIALLY 7,105,644 OWNED BY ----------------------------------------------------------- EACH 7. SOLE DISPOSITIVE POWER REPORTING PERSON WITH -0- ----------------------------------------------------------- 8. SHARED DISPOSITIVE POWER 7,105,644 - ------------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,105,644 - ------------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ] - ------------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.7% - ------------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON CO

13G CUSIP NO. 50540R 10 2 Page 4 of 7 Item 1(a): Name of Issuer. --------------- LABORATORY CORPORATION OF AMERICA HOLDINGS (the "Company") Item 1(b): Address of Issuer's Principal Executive Offices. ------------------------------------------------ 358 South Main Street Burlington, North Carolina 27215 Item 2(a): Name of Persons Filing. ----------------------- National Health Care Group, Inc. ("National Health") is an indirect wholly-owned subsidiary of Mafco Holdings Inc. ("Mafco"). All of the capital stock of Mafco is owned by Ronald O. Perelman. Item 2(b): Address of Principal Business Office. ------------------------------------- The principal business offices of National Health are located at 35 East 62nd Street, New York, New York 10021. The principal business offices of Mafco are located at 35 East 62nd Street, New York, New York 10021. Item 2(c): Citizenship. ------------ National Health and Mafco each are Delaware corporations. Item 2(d): Title of Class of Securities. ----------------------------- Common Stock, par value $.01 per share (the "Shares"). Item 2(e): CUSIP Number. ------------- 50540R 10 2 Item 3: Not Applicable Item 4: Ownership. ---------- National Health owns 7,105,644 Shares, which represented approximately 5.7% of the total number of Shares outstanding on December 31, 1998. Mafco may be deemed to beneficially own the Shares owned by National

13G CUSIP NO. 50540R 10 2 Page 5 of 7 Health. Ronald O. Perelman owns all of the capital stock of Mafco. (a) Amount Beneficially Owned: 7,105,644 Shares (b) Percent of Class: Approximately 5.7% based upon 125,272,546 Shares outstanding on December 31, 1998. (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote..................-0- (ii) Shared power to vote or to direct the vote.........7,105,644 (iii) Sole power to dispose or to direct the disposition of...................-0- (iv) Shared power to dispose or to direct the disposition of.............7,105,644 In addition, National Health owns warrants to purchase 3,290,421 Shares at $22.00 (subject to adjustment). Such warrants are exercisable on April 28, 2000. Item 5: Owner of Five Percent or Less of a Class. ----------------------------------------- Not Applicable Item 6: Ownership of More than Five Percent on Behalf of Another Person. ------------------------------------------------ Not Applicable Item 7: Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company. ---------------------------------------------------- Not Applicable

13G CUSIP NO. 50540R 10 2 Page 6 of 7 Item 8: Identification and Classification of Members of the Group. --------------------------------------------------- Not Applicable Item 9: Notice of Dissolution of Group. ------------------------------- Not Applicable Item 10: Certification. -------------- Not Applicable

13G CUSIP NO. 50540R 10 2 Page 7 of 7 Signature --------- After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated: January 13, 1999 NATIONAL HEALTH CARE GROUP, INC. By: /s/ Glenn P. Dickes -------------------------------- Name: Glenn P. Dickes Title: Vice President MAFCO HOLDINGS INC. By: /s/ Glenn P. Dickes -------------------------------- Name: Glenn P. Dickes Title: Senior Vice President