Unspecified disorders of lactation

This code represents a general category for any unspecificed issue related to a patient's ability to lactate. This includes problems with milk production, milk let-down, or other functional disturbances of the mammary glands during the postpartum period, where a more specific diagnosis cannot be determined.

Use this code when documentation indicates a disorder of lactation but lacks sufficient detail to assign a more specific code (e.g., agalactia, hypogalactia, or suppressed lactation). This code is appropriate when the provider notes "lactation disorder, unspecified" or similar vague terminology.

• Avoid using this code if more specific documentation is available; query the provider for clarification.
• Do not confuse with codes for non-puerperal lactation (N64.3) or galactorrhea (N64.3).
• Always sequence this code after the primary reason for the encounter, if applicable.