Convert ICD-9-CM Diagnosis 656.20 to ICD-10-CM

ICD-9-CM 656.20 converts approximately to:

2023 ICD-10-CM O36.1190 Maternal care for Anti-A sensitization, unspecified trimester, not applicable or unspecified
or:
2023 ICD-10-CM O36.1990 Maternal care for other isoimmunization, unspecified trimester, not applicable or unspecified

Note: approximate conversions between ICD-9-CM codes and ICD-10-CM codes may require clinical interpretation in order to determine the most appropriate conversion code(s) for your specific coding situation.

Source: 2023 ICD-10-CM CMS General Equivalence Mappings.