diff --git a/MIMIC-IV_Example/configs/event_configs.yaml b/MIMIC-IV_Example/configs/event_configs.yaml
index 666bdd3..9d23bb6 100644
--- a/MIMIC-IV_Example/configs/event_configs.yaml
+++ b/MIMIC-IV_Example/configs/event_configs.yaml
@@ -165,8 +165,8 @@ hosp/procedures_icd:
       hosp/d_icd_procedures:
         description: "long_title"
         parent_codes: # List of objects are string labels mapping to filters to be evaluated.
-          - "ICD{icd_version}Proc/{icd_code}": { icd_version: 9 }
-          - "ICD{icd_version}PCS/{icd_code}": { icd_version: 10 }
+          - "ICD{icd_version}Proc/{icd_code}": { icd_version: "9" }
+          - "ICD{icd_version}PCS/{icd_code}": { icd_version: "10" }
 
 hosp/transfers:
   transfer:
diff --git a/pyproject.toml b/pyproject.toml
index a9b3292..ef35299 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,7 @@ classifiers = [
     "Operating System :: OS Independent",
 ]
 dependencies = [
-  "polars~=1.1.0", "pyarrow", "nested_ragged_tensors", "loguru", "hydra-core", "numpy", "meds==0.3.3",
+  "polars~=1.6.0", "pyarrow", "nested_ragged_tensors", "loguru", "hydra-core", "numpy", "meds==0.3.3",
 ]
 
 [tool.setuptools_scm]
diff --git a/src/MEDS_transforms/extract/extract_code_metadata.py b/src/MEDS_transforms/extract/extract_code_metadata.py
index 31d883c..3460cfb 100644
--- a/src/MEDS_transforms/extract/extract_code_metadata.py
+++ b/src/MEDS_transforms/extract/extract_code_metadata.py
@@ -386,7 +386,7 @@ def main(cfg: DictConfig):
 
         metadata_fp, read_fn = get_supported_fp(raw_input_dir, input_prefix)
         if metadata_fp.suffix != ".parquet":
-            read_fn = partial(read_fn, infer_schema_length=999999999)
+            read_fn = partial(read_fn, infer_schema=False)
         out_fp = partial_metadata_dir / f"{input_prefix}.parquet"
         logger.info(f"Extracting metadata from {metadata_fp} and saving to {out_fp}")
 
diff --git a/src/MEDS_transforms/parser.py b/src/MEDS_transforms/parser.py
index 948ca00..3b663f7 100644
--- a/src/MEDS_transforms/parser.py
+++ b/src/MEDS_transforms/parser.py
@@ -596,18 +596,6 @@ def cfg_to_expr(cfg: str | ListConfig | DictConfig) -> tuple[pl.Expr, set[str]]:
         ['34.2', 'bar//2', '34.2']
         >>> sorted(cols)
         ['baz']
-
-    Note that sometimes coalescing can lead to unexpected results. For example, if the first expression is of
-    a different type than the second, the second expression may have its type coerced to match the first,
-    potentially in an unexpected manner. This is also related to some polars, bugs, such as
-    https://github.com/pola-rs/polars/issues/17773
-        >>> cfg = [
-        ...    {"matcher": {"baz": 2}, "output": {"str": "bar//{baz}"}},
-        ...    {"literal": 34.8218},
-        ... ]
-        >>> expr, cols = cfg_to_expr(cfg)
-        >>> data.select(expr.alias("out"))["out"].to_list()
-        ['34', 'bar//2', '34']
     """
     structured_expr = parse_col_expr(cfg)
     return structured_expr_to_pl(structured_expr)