ICD-9 Code 646.80

Other specified complications of pregnancy, unspecified as to episode of care or not applicable

Not Valid for Submission

646.80 is a legacy non-billable code used to specify a medical diagnosis of other specified complications of pregnancy, unspecified as to episode of care or not applicable. This code was replaced on September 30, 2015 by its ICD-10 equivalent.

ICD-9: 646.80
Short Description:Preg compl NEC-unspec
Long Description:Other specified complications of pregnancy, unspecified as to episode of care or not applicable

Convert 646.80 to ICD-10

The following crosswalk between ICD-9 to ICD-10 is based based on the General Equivalence Mappings (GEMS) information:

  • O26.819 - Pregnancy related exhaustion and fatigue, unsp trimester
  • O99.89 - Oth diseases and conditions compl preg/chldbrth

Code Classification

  • Complications of pregnancy, childbirth, and the puerperium (630–679)
    • Complications mainly related to pregnancy (640-649)
      • 646 Other complications of pregnancy, not elsewhere classified

Information for Medical Professionals

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-9 Code Edits are applicable to this code:


  • Acquired immunodeficiency syndrome virus infection associated with pregnancy
  • Benign gestational thrombocytopenia
  • Bone AND/OR joint disorder in mother complicating pregnancy, childbirth AND/OR puerperium
  • Calculus in biliary tract in mother complicating pregnancy
  • Cervical cerclage suture present
  • Chorea gravidarum
  • Disease of the digestive system complicating pregnancy, childbirth and/or the puerperium
  • Disease of the respiratory system complicating pregnancy, childbirth and/or the puerperium
  • Erythema multiforme of pregnancy
  • Fatigue during pregnancy
  • Fatigue during pregnancy - delivered with postnatal complication
  • Fatigue during pregnancy with postnatal complication
  • Fetal parts not palpable per abdomen
  • Fetus absent
  • Fetus not seen
  • Fundal height high for dates
  • Gallbladder calculus in mother complicating childbirth
  • Gastrointestinal tract finding associated with pregnancy
  • Generalized pustular psoriasis of pregnancy
  • Granuloma gravidarum
  • Herpes gestationis
  • Herpes gestationis - delivered with postnatal complication
  • Herpes gestationis - not delivered
  • Herpes gestationis with postnatal complication
  • Herpes in pregnancy
  • Hydrorrhea gravidarum
  • Idiopathic osteoporosis in pregnancy
  • Insufficient weight gain of pregnancy
  • Low maternal weight gain
  • Maternal drug use
  • Maternal virilization due to placental aromatase deficiency
  • Melasma gravidarum
  • Mitral valve disorder in pregnancy
  • Nutritional deficiency in pregnancy
  • Obstetric pain
  • Orthopedic disorders during pregnancy, childbirth and the puerperium
  • Papular dermatitis of pregnancy
  • Placenta edematous
  • Pregnancy eruption
  • Pregnancy gingivitis
  • Pregnancy with orthopedic problem
  • Pregnancy-related exacerbation of dermatosis
  • Pregnancy-related factor VIII deficiency
  • Pregnancy-related glycosuria
  • Prurigo of pregnancy
  • Pruritic folliculitis of pregnancy
  • Pruritus of pregnancy
  • Spider telangiectasis in association with pregnancy
  • Tender scar of gravid uterus
  • Transplacental herpes gestationis
  • Virilized female due to gestational hyperandrogenism

Information for Patients

Health Problems in Pregnancy

Every pregnancy has some risk of problems. The causes can be conditions you already have or conditions you develop. They also include being pregnant with more than one baby, previous problem pregnancies, or being over age 35. They can affect your health and the health of your baby.

If you have a chronic condition, you should talk to your health care provider about how to minimize your risk before you get pregnant. Once you are pregnant, you may need a health care team to monitor your pregnancy. Examples of common conditions that can complicate a pregnancy include

  • Heart disease
  • High blood pressure
  • Kidney problems
  • Autoimmune disorders
  • Sexually transmitted diseases
  • Diabetes
  • Cancer
  • Infections

Other conditions that can make pregnancy risky can happen while you are pregnant - for example, gestational diabetes and Rh incompatibility. Good prenatal care can help detect and treat them.

Some discomforts, like nausea, back pain, and fatigue, are common during pregnancy. Sometimes it is hard to know what is normal. Call your doctor or midwife if something is bothering or worrying you.

  • Bed rest during pregnancy
  • Hydramnios
  • Hyperemesis gravidarum
  • Insufficient cervix
  • Morning sickness
  • Morning sickness
  • Placenta abruptio
  • Placenta abruptio
  • Placenta previa
  • Polyhydramnios
  • Serum progesterone
  • Striae
  • Vaginal bleeding in early pregnancy
  • Vaginal bleeding in late pregnancy
  • Vaginal bleeding in pregnancy

[Read More]

ICD-9 Footnotes

General Equivalence Map Definitions
The ICD-9 and ICD-10 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.