O99.285 Endocrine, nutritional and metabolic diseases complicating the puerperium

Billable ICD-10-CM code, FY2026.

Applies from O99 Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

Includes

• conditions which complicate the pregnant state, are aggravated by the pregnancy or are a main reason for obstetric care

Excludes2 (not included here)

• when the reason for maternal care is that the condition is known or suspected to have affected the fetus (O35-O36)

Use additional code

• code to identify specific condition

Applies from O99.2 Endocrine, nutritional and metabolic diseases complicating pregnancy, childbirth and the puerperium

Applicable to

• Conditions in E00-E89

Excludes2 (not included here)

• diabetes mellitus (O24.-)
• malnutrition (O25.-)
• postpartum thyroiditis (O90.5)

MS-DRG index

Defines the logic of DRG(s) 769 in MDC 14.

Approximate ICD-9-CM (GEMs)

• 648.94 Other current conditions classifiable elsewhere of mother, postpartum condition or complication (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Maternity diagnoses (age 9 through 64): Age conflict edit. These diagnoses are clinically expected only in patients age 9 through 64.

Diagnosis Index entries for O99.285

• Hypopituitarism (juvenile) › postpartum
• Necrosis, necrotic (ischemic) › pituitary (gland) › postpartum
• Necrosis, necrotic (ischemic) › pituitary (gland) › Sheehan
• Puerperal, puerperium (complicated by, complications) › endocrine, nutritional or metabolic disease NEC

Nearby codes

• O99.280 Endocrine, nutritional and metabolic diseases complicating pregnancy, unspecified trimester
• O99.281 Endocrine, nutritional and metabolic diseases complicating pregnancy, first trimester
• O99.282 Endocrine, nutritional and metabolic diseases complicating pregnancy, second trimester
• O99.283 Endocrine, nutritional and metabolic diseases complicating pregnancy, third trimester
• O99.284 Endocrine, nutritional and metabolic diseases complicating childbirth
• O99.285 Endocrine, nutritional and metabolic diseases complicating the puerperium (this code)
• O99.3 Mental disorders and diseases of the nervous system complicating pregnancy, childbirth and the puerperium
• O99.31 Alcohol use complicating pregnancy, childbirth, and the puerperium
• O99.310 Alcohol use complicating pregnancy, unspecified trimester
• O99.311 Alcohol use complicating pregnancy, first trimester
• O99.312 Alcohol use complicating pregnancy, second trimester