diff --git a/src/aces/config.py b/src/aces/config.py
index 41383a5..c436252 100644
--- a/src/aces/config.py
+++ b/src/aces/config.py
@@ -906,6 +906,10 @@ class TaskExtractorConfig:
         ...     "discharge": PlainPredicateConfig("discharge"),
         ...     "death": PlainPredicateConfig("death"),
         ...     "death_or_discharge": DerivedPredicateConfig("or(death, discharge)"),
+        ...     "diabetes_icd9": PlainPredicateConfig("ICD9CM//250.02"),
+        ...     "diabetes_icd10": PlainPredicateConfig("ICD10CM//E11.65"),
+        ...     "diabetes": DerivedPredicateConfig("or(diabetes_icd9, diabetes_icd10)"),
+        ...     "diabetes_and_discharge": DerivedPredicateConfig("and(diabetes, discharge)"),
         ... }
         >>> trigger = EventConfig("admission")
         >>> windows = {
@@ -950,23 +954,44 @@ class TaskExtractorConfig:
                               static=False,
                               other_cols={}),
          'death': PlainPredicateConfig(code='death',
+                              value_min=None,
+                              value_max=None,
+                              value_min_inclusive=None,
+                              value_max_inclusive=None,
+                              static=False,
+                              other_cols={}),
+         'diabetes_icd9': PlainPredicateConfig(code='ICD9CM//250.02',
+                              value_min=None,
+                              value_max=None,
+                              value_min_inclusive=None,
+                              value_max_inclusive=None,
+                              static=False,
+                              other_cols={}),
+         'diabetes_icd10': PlainPredicateConfig(code='ICD10CM//E11.65',
                               value_min=None,
                               value_max=None,
                               value_min_inclusive=None,
                               value_max_inclusive=None,
                               static=False,
                               other_cols={})}
-
         >>> print(config.label_window) # doctest: +NORMALIZE_WHITESPACE
         target
         >>> print(config.index_timestamp_window) # doctest: +NORMALIZE_WHITESPACE
         input
         >>> print(config.derived_predicates) # doctest: +NORMALIZE_WHITESPACE
-        {'death_or_discharge': DerivedPredicateConfig(expr='or(death, discharge)', static=False)}
+        {'death_or_discharge': DerivedPredicateConfig(expr='or(death, discharge)', static=False),
+         'diabetes': DerivedPredicateConfig(expr='or(diabetes_icd9, diabetes_icd10)', static=False),
+         'diabetes_and_discharge': DerivedPredicateConfig(expr='and(diabetes, discharge)', static=False)}
         >>> print(nx.write_network_text(config.predicates_DAG))
         ╟── death
         ╎   └─╼ death_or_discharge ╾ discharge
-        ╙── discharge
+        ╟── discharge
+        ╎   ├─╼ diabetes_and_discharge ╾ diabetes
+        ╎   └─╼  ...
+        ╟── diabetes_icd9
+        ╎   └─╼ diabetes ╾ diabetes_icd10
+        ╎       └─╼  ...
+        ╙── diabetes_icd10
             └─╼  ...
         >>> print_tree(config.window_tree)
         trigger
@@ -975,6 +1000,7 @@ class TaskExtractorConfig:
             └── gap.end
                 └── target.end
 
+    Configs will error out in various ways when passed inappropriate arguments:
         >>> config_path = "/foo/non_existent_file.yaml"
         >>> cfg = TaskExtractorConfig.load(config_path)
         Traceback (most recent call last):