Convert ICD-9-CM Diagnosis 644.21 to ICD-10-CM

ICD-9-CM 644.21 converts approximately to:
  • 2020 ICD-10-CM O60.12X0 Preterm labor second trimester with preterm delivery second trimester, not applicable or unspecified
    or:
  • 2020 ICD-10-CM O60.13X0 Preterm labor second trimester with preterm delivery third trimester, not applicable or unspecified
    or:
  • 2020 ICD-10-CM O60.14X0 Preterm labor third trimester with preterm delivery third 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: 2020 ICD-10-CM CMS General Equivalence Mappings.