diff --git a/pipelines/plot_category_pointintervals.R b/pipelines/plot_category_pointintervals.R
index 7c56680..90fdf2a 100644
--- a/pipelines/plot_category_pointintervals.R
+++ b/pipelines/plot_category_pointintervals.R
@@ -4,64 +4,20 @@ library(dplyr)
 library(argparser)
 
 
-categorize_vec <- function(values, break_sets, label_sets) {
-  return(purrr::pmap_vec(
-    list(
-      x = values,
-      breaks = break_sets,
-      labels = label_sets,
-      include.lowest = TRUE,
-      order = TRUE,
-      right = TRUE
-    ),
-    cut
-  ))
-}
-
-
-
-with_category_cutpoints <- function(df,
-                                    disease,
-                                    categories) {
-  with_cutpoints <- df |>
-    mutate(disease = !!disease) |>
-    inner_join(categories, by = c("location", "disease"))
-  return(with_cutpoints)
-}
-
-
 to_categorized_iqr <- function(hub_table,
-                               disease,
-                               categories,
-                               .keep = FALSE) {
+                               disease) {
   result <- hub_table |>
     pivot_hubverse_quantiles_wider() |>
-    with_category_cutpoints(
-      disease = disease,
-      categories = categories
-    ) |>
     mutate(
-      category_point = categorize_vec(
-        .data$point,
-        .data$bin_breaks,
-        .data$bin_names
-      ),
-      category_lower = categorize_vec(
-        .data$lower,
-        .data$bin_breaks,
-        .data$bin_names
-      ),
-      category_upper = categorize_vec(
-        .data$upper,
-        .data$bin_breaks,
-        .data$bin_names
-      ),
+      across(c("point", "lower", "upper"),
+        ~ forecasttools::categorize_prism(
+          .x,
+          .data$location,
+          !!disease
+        ),
+        .names = "category_{.col}"
+      )
     )
-
-  if (!.keep) {
-    result <- result |> select(-c(bin_breaks, bin_names))
-  }
-
   return(result)
 }
 
@@ -118,51 +74,11 @@ main <- function(influenza_table_path,
                  categories_path,
                  output_path,
                  ...) {
-  categories <- arrow::read_parquet(categories_path) |>
-    transmute(
-      disease,
-      location = state_abb,
-      prop_lower_bound = 0,
-      prop_low = perc_level_low / 100,
-      prop_moderate = perc_level_moderate / 100,
-      prop_high = perc_level_high / 100,
-      prop_very_high = perc_level_very_high / 100,
-      prop_upper_bound = 1,
-      very_low_name = "Very Low",
-      low_name = "Low",
-      moderate_name = "Moderate",
-      high_name = "High",
-      very_high_name = "Very High"
-    ) |>
-    tidyr::nest(
-      bin_breaks = c(
-        prop_lower_bound,
-        prop_low,
-        prop_moderate,
-        prop_high,
-        prop_very_high,
-        prop_upper_bound
-      ),
-      bin_names = c(
-        very_low_name,
-        low_name,
-        moderate_name,
-        high_name,
-        very_high_name
-      )
-    )
-
   flu_dat <- readr::read_tsv(influenza_table_path) |>
-    to_categorized_iqr(
-      "Influenza",
-      categories
-    )
+    to_categorized_iqr("Influenza")
 
   covid_dat <- readr::read_tsv(covid_table_path) |>
-    to_categorized_iqr(
-      "COVID-19",
-      categories
-    )
+    to_categorized_iqr("COVID-19")
 
   plots <- list(
     flu_plot_1wk = flu_dat |>
@@ -199,10 +115,6 @@ p <- arg_parser("Create a pointinterval plot of forecasts") |>
     "covid_table_path",
     help = "Path to a hubverse format forecast table for COVID-19."
   ) |>
-  add_argument(
-    "categories_path",
-    help = "Path to a parquet file containing PRISM category cutpoints."
-  ) |>
   add_argument(
     "output_path",
     help = "Path to save the output plots, as a single PDF"