Determine whether codes are billable leaf-nodes

Codes provided are compared to the most recent edition of the CMS list of billable codes, or another edition if specified.

is_leaf(x, short_code = guess_short(x), ...)

# S3 method for icd9
is_leaf(x, short_code = guess_short(x), ...)

# S3 method for icd10cm
is_leaf(x, short_code = guess_short(x), ...)

# S3 method for icd10
is_leaf(x, short_code = guess_short(x), ...)

# S3 method for icd9cm
is_leaf(x, short_code = guess_short(x), ...)

# S3 method for default
is_leaf(x, short_code = guess_short(x), ...)

Arguments

x	input vector to test
short_code	single logical value which determines whether the ICD-9 code provided is in short (TRUE) or decimal (FALSE) form. Where reasonable, this is guessed from the input data.
...	arguments passed on to other functions

Value

logical vector of same length as input

Methods (by class)

• icd9: Which of the given ICD-9 codes are leaf nodes in ICD-9-CM. Currently assumes ICD-9 codes are ICD-9-CM

• icd10cm: Which of the given ICD-10 codes are leaf nodes in ICD-10-CM. Currently assumes ICD-10 codes are ICD-10-CM

• icd10: Which of the given ICD-10 codes are leaf nodes in ICD-10-CM. Currently assumes ICD-10 codes are ICD-10-CM

• icd9cm: Which of the given ICD-9 codes are leaf nodes in ICD-9-CM

• default: Which of the given ICD codes are leaf nodes in ICD version (9 vs 10) guessed from the codes themselves.