ICD-10-CM 2027
ICD-10 code for Blues
From the official ICD-10-CM alphabetic index entry “Blues, postpartal”. Page updated September 29, 2026.
About coding Blues
The ICD-10-CM code for Blues is O90.6 (Postpartum mood disturbance). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on O90.6.
Within O90 (complications of the puerperium, not elsewhere classified), O90.6 is specifically for postpartum mood disturbance. Related codes cover disruption of cesarean delivery wound (O90.0), disruption of perineal obstetric wound (O90.1), hematoma of obstetric wound (O90.2), Peripartum cardiomyopathy (O90.3), postpartum acute kidney failure (O90.4), postpartum thyroiditis (O90.5), other complications of the puerperium, not elsewhere classified (O90.8) and complication of the puerperium, unspecified (O90.9).
Don't report O90.6 together with the conditions in its Excludes1 note: postpartum depression (F53.0) and puerperal psychosis (F53.1).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific Blues codes (official index)
- baby O90.6 — Postpartum mood disturbance
Don't confuse with (Excludes1 for O90.6)
Common questions about Blues ICD-10 codes
What is the ICD-10 code for Blues?
- O90.6 — Postpartum mood disturbance. More specific codes apply when the documentation supports them: O90.6.
What is the ICD-10 code for baby blues?
- O90.6 — Postpartum mood disturbance.
Is O90.6 billable?
- Yes. O90.6 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can O90.6 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict O90.6 as a principal diagnosis.
Is O90.6 a CC or MCC?
- No. O90.6 is neither a CC nor an MCC under MS-DRG v44.0.