Hair Loss ICD-10-CM Codes

Learn more about the different hair loss ICD codes. This information will allow you to improve your coding processes and ensure accurate billing.

By Patricia Buenaventura on Jun 05, 2025.

Fact Checked by Gale Alagos.

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Hair Loss ICD-10-CM Codes

What ICD-10 codes are used for hair loss?

There's a wide array of hair loss ICD codes you can use. A few specifically have hair loss in their names, and there are codes specific to Alopecia. For this short guide, we will cover a bit of both:

L64.9: Androgenic alopecia, unspecified

This ICD code is meant for androgenic alopecia or male pattern alopecia. This code can be specifically used for males and manifests in a receding hairline and crown thinning, creating an "M" shape on the scalp.

L65.9: Nonscarring hair loss, unspecified

This ICD-10 code is meant to be used on a patient confirmed to have nonscarring hair loss. In the context of this ICD-10 code, the site of the hair loss isn't specified. What is meant by nonscarring hair loss is that the hair follicles are preserved, which means that hair loss can be reversed and regrowth is still possible.

L65.8: Other specified nonscarring hair loss

This ICD-10 code is meant to be used on a patient confirmed to have nonscarring hair loss. This is only meant to be used if the person has nonscarring hair loss not covered by other ICD-10 codes.

L63.9: Alopecia areata, unspecified

This ICD-10 code is meant for a patient confirmed to have Alopecia Areata, the autoimmune disorder we mentioned earlier. The unspecified label points to the specific nature of the disorder to be unknown. All that is known is that the patient has the disorder.

L63.0: Alopecia (capitis) totalis

This ICD-10 code is meant to be used for a patient confirmed to have Alopecia Totalis. This type of Alopecia means that the person who has it is completely bald because it is characterized by the total loss of hair on the scalp.

L63.1: Alopecia universalis

This ICD-10 code is meant to be used for a patient confirmed to have Alopecia Universalis. This type of Alopecia means that the person who has it is completely hairless. Yes, even your eyebrows, body hair, pubic hair, all the hair.

L66.9: Cicatricial alopecia, unspecified

This ICD-10 code is meant to be used for a patient confirmed to have Cicatricial Alopecia [scarring hair loss]. This is a scarring type of Alopecia, meaning the hair follicles are destroyed. This leads to scarring and permanent hair loss.

Which hair loss ICD codes are billable?

Yes. All the aforementioned ICD codes are valid and billable.

Clinical information

  • Hair loss, or Alopecia, can result from many things, like inheriting Alopecia Areata, hormone changes, conditions that can affect hair, extreme stress, or aging.
  • Depending on the cause of the hair loss, it can either be temporary (meaning her regrowth is possible) or permanent (the hair follicles were destroyed, so hair regrowth becomes impossible).
  • Manifestations of hair loss included bald patches, receding hairline, gradual thinning, and shedding of the hair.
  • Treatment for hair loss will depend on the causes, so it's best to test your patients first and find out the nature of their hair loss.

Synonyms include

  • Alopecia
  • Alopecia localis
  • Diffuse alopecia
  • Diffuse loss of scalp hair
  • Failure of hair growth
  • Loss of axillary hair
  • Loss of body hair
  • Loss of hair
  • Loss of pubic hair
  • Loss of scalp hair
  • Non-scarring alopecia
  • Scarring alopecia
  • Scarring alopecia due to traumatic injury

Frequently asked questions

Are there any unbillable hair loss ICD codes?

Yes, but it’s best to refrain from using those codes. Consider using valid codes, the ones that have more specificity. These are billable, and many can be used as principal diagnoses.

How is hair loss diagnosed?

Healthcare professionals can perform pull tests (pulling the hair and seeing how much comes off), blood tests, light microscopies, and scalp biopsies.

How is hair loss treated?

Treatment will depend on the findings and if it is possible to regrow the hair. Some healthcare professionals will prescribe certain medications like minoxidil and finasteride. Some might recommend laser therapy or hair transplant surgery.

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