ICD-10-CM 2027
ICD-10 code for estrangement
From the official ICD-10-CM alphabetic index entry “Estrangement (marital)”. Page updated September 29, 2026.
About coding estrangement
The ICD-10-CM code for estrangement is Z63.5 (Disruption of family by separation and divorce). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on Z63.5.
Within Z63 (other problems related to primary support group, including family circumstances), Z63.5 is specifically for disruption of family by separation and divorce. Related codes cover problems in relationship with spouse or partner (Z63.0), problems in relationship with in-laws (Z63.1), absence of family member (Z63.3), Disappearance and death of family member (Z63.4), dependent relative needing care at home (Z63.6), other stressful life events affecting family and household (Z63.7), other specified problems related to primary support group (Z63.8) and problem related to primary support group, unspecified (Z63.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific estrangement codes (official index)
- parent-child NEC Z62.890 — Parent-child estrangement NEC
Common questions about estrangement ICD-10 codes
What is the ICD-10 code for estrangement?
- Z63.5 — Disruption of family by separation and divorce. More specific codes apply when the documentation supports them: Z62.890.
What is the ICD-10 code for parent-child nec estrangement?
- Z62.890 — Parent-child estrangement NEC.
Is Z63.5 billable?
- Yes. Z63.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z63.5 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z63.5 a CC or MCC?
- No. Z63.5 is neither a CC nor an MCC under MS-DRG v44.0.