ICD-9 Code 703.8

Other specified diseases of nail

Not Valid for Submission

703.8 is a legacy non-billable code used to specify a medical diagnosis of other specified diseases of nail. This code was replaced on September 30, 2015 by its ICD-10 equivalent.

ICD-9: 703.8
Short Description:Diseases of nail NEC
Long Description:Other specified diseases of nail

Convert 703.8 to ICD-10

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

Code Classification

  • Diseases of the skin and subcutaneous tissue (680–709)
    • Other diseases of skin and subcutaneous tissue (700-709)
      • 703 Diseases of nail

Information for Medical Professionals


  • Abnormality of nail tissue
  • Acquired koilonychia
  • Acquired striate leukonychia
  • Azure half-moon nail
  • Beaded ridging of nails
  • Beau's lines
  • Beau's lines secondary to systemic illness
  • Brachyonychia
  • Change in nail appearance
  • Clubbing of nail
  • Disorder of nail color
  • Drug-induced leukonychia
  • Drug-induced onycholysis
  • Dystrophia unguium
  • Dystrophia unguium, partial
  • Dystrophia unguium, total
  • Eggshell nail
  • Eggshell nails
  • Elkonyxis
  • Enlarged nails
  • Excessive growth of nails
  • Gray nails
  • Grooving of nail
  • Half-and-half nail
  • Hereditary lymphedema and yellow nails
  • Hereditary striate leuconychia
  • Hypertrophy of nail
  • Hypertrophy of toenail
  • Idiopathic atrophy of nail in childhood
  • Idiopathic photo-onycholysis
  • Koilonychia
  • Lamellar nail splitting
  • Large lunula
  • Leukonychia
  • Leukonychia punctata
  • Leukonychia secondary to systemic disease
  • Leukonychia striata
  • Lichen planus of nail
  • Longitudinal brown stripes in nails
  • Longitudinal grooving of nails
  • Longitudinal split nail
  • Lupus erythematosus-associated nail dystrophy
  • Macronychia
  • Malalignment of nail
  • Median canaliform nail dystrophy
  • Median nail dystrophy
  • Median nail dystrophy of Heller
  • Mee's line
  • Melanonychia
  • Micronychia
  • Muehrcke's lines
  • Nail discoloration
  • Nail dystrophy associated with bullous dermatoses
  • Nail dystrophy associated with dermatological disease
  • Nail dystrophy due to benign familial pemphigus
  • Nail dystrophy due to cytotoxic therapy
  • Nail dystrophy due to Darier's disease
  • Nail dystrophy due to graft-versus-host disease
  • Nail dystrophy due to habit tic
  • Nail dystrophy due to lichen nitidus
  • Nail dystrophy due to lichen striatus
  • Nail dystrophy due to nail biting
  • Nail dystrophy due to pityriasis rubra pilaris
  • Nail dystrophy due to sarcoidosis
  • Nail dystrophy due to secondary syphilis
  • Nail dystrophy resulting from poisonous chemical
  • Nail pterygium in lichen planus
  • Nail shedding
  • Nail surface rough
  • Nailfold hemorrhages
  • Nails crumble
  • Nutcracker nails
  • On examination - nails
  • On examination - nails - koilonychia
  • On examination - nails - pitting
  • On examination - nails - splinter hemorrhage
  • On examination - nails brittle
  • On examination - nails ridged
  • Onychatrophy due to lichen planus
  • Onychoatrophy
  • Onychogryposis
  • Onycholysis
  • Onycholysis due to fungal infection of nail
  • Onychomadesis
  • Onychomalacia
  • Parrot-beak nail
  • Photoonycholysis
  • Physiological brown stripes in nails
  • Pincer nail deformity
  • Pitting of nails
  • Pseudo-clubbing
  • Psoriatic nail dystrophy
  • Psoriatic nail pitting
  • Psoriatic onycholysis
  • Pterygium inversum unguis
  • Red half-moon nail in congestive heart failure
  • Reedy nail
  • Scleroderma-associated nail dystrophy
  • Separation of nail fold
  • Splits in nails
  • Splitting toenail
  • Stained nail
  • Striate leuconychia
  • Subungual hemorrhage
  • Subungual hyperkeratosis
  • Thin nails
  • Toenail thickened
  • Trachyonychia
  • Transverse overcurvature of nail
  • Transverse split nail
  • Traumatic onychia
  • Traumatic onycholysis
  • Traumatic splinter hemorrhage
  • Twenty nail dystrophy
  • White flecks in nails
  • White nails
  • Yellow nails

Index to Diseases and Injuries

References found for the code 703.8 in the Index of Diseases and Injuries:

Information for Patients

Nail Diseases

Your toenails and fingernails protect the tissues of your toes and fingers. They are made up of layers of a hardened protein called keratin, which is also in your hair and skin. The health of your nails can be a clue to your overall health. Healthy nails are usually smooth and consistent in color. Specific types of nail discoloration and changes in growth rate can be signs of lung, heart, kidney, and liver diseases, as well as diabetes and anemia. White spots and vertical ridges are harmless.

Nail problems that sometimes require treatment include:

  • Bacterial and fungal infections
  • Ingrown nails
  • Tumors
  • Warts

Keeping your nails clean, dry, and trimmed can help you avoid some problems. Do not remove the cuticle, which can cause infection.

[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.

Index of Diseases and Injuries Definitions

  • And - The word "and" should be interpreted to mean either "and" or "or" when it appears in a title.
  • Code also note - A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
  • Code first - Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
  • Type 1 Excludes Notes - A type 1 Excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • Type 2 Excludes Notes - A type 2 Excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • Includes Notes - This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • Inclusion terms - List of terms is included under some codes. These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • NEC "Not elsewhere classifiable" - This abbreviation in the Alphabetic Index represents "other specified". When a specific code is not available for a condition, the Alphabetic Index directs the coder to the "other specified” code in the Tabular List.
  • NOS "Not otherwise specified" - This abbreviation is the equivalent of unspecified.
  • See - The "see" instruction following a main term in the Alphabetic Index indicates that another term should be referenced. It is necessary to go to the main term referenced with the "see" note to locate the correct code.
  • See Also - A "see also" instruction following a main term in the Alphabetic Index instructs that there is another main term that may also be referenced that may provide additional Alphabetic Index entries that may be useful. It is not necessary to follow the "see also" note when the original main term provides the necessary code.
  • 7th Characters - Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
  • With - The word "with" should be interpreted to mean "associated with" or "due to" when it appears in a code title, the Alphabetic Index, or an instructional note in the Tabular List. The word "with" in the Alphabetic Index is sequenced immediately following the main term, not in alphabetical order.