foo.diff

diff --git i/src/nvim/eval.c w/src/nvim/eval.c
index 28c590c0b..c60ec7b03 100644
--- i/src/nvim/eval.c
+++ w/src/nvim/eval.c
@@ -22538,3 +22538,50 @@ void ex_checkhealth(exarg_T *eap)
 
   xfree(buf);
 }
+
+/// Function given to ExpandGeneric() to obtain expansion specific
+/// to the checkhealth command.
+char_u *get_checkhealth_name(expand_T *xp, int idx)
+{
+  const char *vimruntime_env = os_getenv("VIMRUNTIME");
+  if (vimruntime_env == NULL) {
+    return NULL;
+  }
+
+  char *checkhealth_cmds[10] = { NULL };
+  size_t bufsize = STRLEN(vimruntime_env) + sizeof("/autoload/health");
+  char *dirpath = xmalloc(bufsize);
+  snprintf(dirpath, bufsize, "%s/autoload/health", vimruntime_env);
+
+  Directory dir;
+  if (os_file_is_readable(dirpath) && os_scandir(&dir, dirpath)) {
+    char *entry;
+    int i = 0;
+    while (i < 10 && (entry = (char *)os_scandir_next(&dir))) {
+      // Remove "\.vim" from "file\.vim"
+      if (STRLEN(entry) > 5) {
+        size_t ext_start = STRLEN(entry) - 4;
+        entry[ext_start] = NUL;
+        checkhealth_cmds[i++] = entry;
+      }
+    }
+  }
+
+  os_closedir(&dir);
+  xfree(dirpath);
+
+  return (char_u *)checkhealth_cmds[idx];
+}
+
+/// Handle command line completion for :checkhealth command.
+void set_context_in_checkhealth_cmd(expand_T *xp, const char *arg)
+{
+  xp->xp_context = EXPAND_CHECKHEALTH;
+  xp->xp_pattern = (char_u *)arg;
+
+  if (*skiptowhite((const char_u *)arg) == NUL) {
+    return;
+  }
+
+  xp->xp_context = EXPAND_NOTHING;
+}
diff --git i/src/nvim/ex_docmd.c w/src/nvim/ex_docmd.c
index 2fa8db6b8..d275c6e7c 100644
--- i/src/nvim/ex_docmd.c
+++ w/src/nvim/ex_docmd.c
@@ -3442,6 +3442,9 @@ const char * set_one_cmd_context(
   case CMD_profile:
     set_context_in_profile_cmd(xp, arg);
     break;
+  case CMD_checkhealth:
+    set_context_in_checkhealth_cmd(xp, arg);
+    break;
   case CMD_behave:
     xp->xp_context = EXPAND_BEHAVE;
     xp->xp_pattern = (char_u *)arg;
diff --git i/src/nvim/ex_getln.c w/src/nvim/ex_getln.c
index 82fac8d78..f04686edc 100644
--- i/src/nvim/ex_getln.c
+++ w/src/nvim/ex_getln.c
@@ -4718,6 +4718,7 @@ ExpandFromContext (
       { EXPAND_CSCOPE, get_cscope_name, true, true },
       { EXPAND_SIGN, get_sign_name, true, true },
       { EXPAND_PROFILE, get_profile_name, true, true },
+      { EXPAND_CHECKHEALTH, get_checkhealth_name, true, true },
 #ifdef HAVE_WORKING_LIBINTL
       { EXPAND_LANGUAGE, get_lang_arg, true, false },
       { EXPAND_LOCALES, get_locales, true, false },
diff --git i/src/nvim/vim.h w/src/nvim/vim.h
index b535e380d..38cb168c0 100644
--- i/src/nvim/vim.h
+++ w/src/nvim/vim.h
@@ -144,6 +144,7 @@ enum {
   EXPAND_CSCOPE,
   EXPAND_SIGN,
   EXPAND_PROFILE,
+  EXPAND_CHECKHEALTH,
   EXPAND_BEHAVE,
   EXPAND_FILETYPE,
   EXPAND_FILES_IN_PATH,