Htaccess Rewrite showing 404 not found - regex

Question

I have this rewite rule in my htaccess file that removes index.php on the URL to just show the domain name
RewriteCond %{THE_REQUEST} /index\.php [NC]
RewriteRule ^(.*?)index\.php$ /$1 [L,R=302,NC,NE]
But it seems to show 404 not found on all other directories. For example, I have a directory called admin and if I go to www.domain.com/admin I get 404 not found
I also have this code above the RewriteCond code
RewriteCond %{REQUEST_URI} !^/admin [NC]
Here is my full htaccess file
RewriteEngine On
RewriteCond %{REQUEST_URI} !^/admin [NC]
RewriteCond %{REQUEST_URI} !^/status [NC]
RewriteCond %{REQUEST_URI} !^/customer [NC]
RewriteCond %{THE_REQUEST} /index\.php [NC]
RewriteRule ^(.*?)index\.php$ /$1 [L,R=302,NC,NE]
# Rewrites /services to be /home.php?id=services
RewriteRule ^([a-zA-Z0-9-]+)/?$ /home.php?id=$1 [L,QSA]
#BLOG
# Rewrites /blog/this-is-a-blog-post to be /home.php?id=blog&slug=this-is-a-blog-post
RewriteRule ^([a-zA-Z0-9-]+)/([\w-]+)/?$ /home.php?id=$1&slug=$2 [L,QSA]
# Rewrites /blog/year2013/month12 to be /home.php?id=blog&year=2013&month=01
RewriteRule ^([a-zA-Z0-9-]+)/year([0-9]+)/month([0-9]+)/?$ /home.php?id=$1&year=$2&month=$3 [L,QSA]

Answer 1

I believe services rules is causing problem here. Change that to:
# Rewrites /services to be /home.php?id=services
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([a-zA-Z0-9-]+)/?$ /home.php?id=$1 [L,QSA]
Do the same for blog rule also:
#BLOG
# Rewrites /blog/this-is-a-blog-post to be /home.php?id=blog&slug=this-is-a-blog-post
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([a-zA-Z0-9-]+)/([\w-]+)/?$ /home.php?id=$1&slug=$2 [L,QSA]