Check out the pyicd documentation on ReadTheDocs.
A python package with basic utilities for ICD-9-CM and ICD-10-CM codes.
Convert between ICD-9-CM and ICD-10-CM using General Equivalency Maps (GEMs)
- Forward and backward ICD mapping
- Filter by GEMs flag type
Lexical ICD-9-CM and ICD-10-CM querying
- Search ICD-9 or ICD-10 codes by clinical keyword
GEMs
General Equivalency Maps (GEMs) support the interoperability between ICD-9 and ICD-10 codebases and are maintained by the Centers for Medicare and Medicaid Services (CMS). Multiple mapping types may occur including one-to-one and one-to-many. GEMs provide various flags to further characterize these mapping relationships.
Forward mapping
Mapping from ICD-9 to ICD-10 codes.
Backward mapping
Mapping from ICD-10 to ICD-9 codes.
Flag types
Approximate: Mappings with imperfect correspondence (approximate = 1) or a perfect correspondence (approximate = 0).
No Map: No acceptable GEMs mapping exists (no map = 1) or one or greater mappings exist (no map = 0).
Combination: Mapping is one-to-many (combination = 1) or one-to-one (combination = 0).
Scenario: Multiple target codes are required to complete mapping (scenario = 1) or multiple target codes are not required (scenario = 0)
Choice list: Used on conjuction with the combination flag to direct alternatives when mappings are one-to-many. If a single combination mapping exists: choice list = 1, if more than one combination mapping exists: choice list = 2, if no combination mapping exists: choice list = 0
Installation
$ python -m pip install git+https://github.com/pkmklong/pyicd.git
Forward mapping
from pyicd.utils.icd_tools import icd9_to_icd10
icd9_to_icd10(icd_code = "59972", flag = "approximate")
source icd10 description
59972 R311 BENIGN ESSENTIAL MICROSCOPIC HEMATURIA
59972 R3121 ASYMPTOMATIC MICROSCOPIC HEMATURIA
59972 R3129 OTHER MICROSCOPIC HEMATURIABackward mapping
from pyicd.utils.icd_tools import icd10_to_icd9
icd10_to_icd9(icd_code = "R6521", show_flags = True)
source icd9 description approximate no map combination scenario choice list
R6521 99592 SEVERE SEPSIS 1 0 1 1 2
R6521 78552 SEPTIC SHOCK 1 0 1 1 1 Search by clinical term
from pyicd.utils.icd_tools import search_icd10
search_icd10(search_term = "fibrillation")
icd10 description
I4891 UNSPECIFIED ATRIAL FIBRILLATION
I4901 VENTRICULAR FIBRILLATIONThe author of this library is not affiliated, associated, authorized, endorsed by, or in any way officially connected with Centers for Medicare and Medicaid Services (CMS), or any of its subsidiaries or its affiliates.